Malicious PDF — malware analysis report

Static analysis result for SHA-256 f46af3da22acbbc3…

MALICIOUS

PDF

60.7 KB Created: 2020-10-28 12:31:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 8b37143c7cf865f16f4302bd087ff73a SHA-1: 17347b3d2172b301181b8156664c25e56ab7f1d1 SHA-256: f46af3da22acbbc3342aa4a6fcb00be7654c721e1feac9aabad22ced352ab893
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.me/123?keyword=match+definition+in+spanish In PDF document text
    • https://jamafijuzu.weebly.com/uploads/1/3/1/4/131437216/doxanitug.pdfIn PDF document text
    • https://kizozejibudi.weebly.com/uploads/1/3/4/4/134460324/3671102.pdfIn PDF document text
    • https://lesofetu.weebly.com/uploads/1/3/1/3/131378838/45e1c.pdfIn PDF document text
    • https://tivakoxidedopa.weebly.com/uploads/1/3/0/7/130776298/7456368.pdfIn PDF document text
    • https://vozutadisifik.weebly.com/uploads/1/3/1/4/131483249/7464608.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://uploads.strikinglycdn.com/files/571fc6b7-d0e9-424b-9033-4ba41fcf04d4/24567047316.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2721/0144/files/olympiad_sample_papers_for_class_9.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38d8e110-d140-4d84-990f-9346493c5c69/69587058737.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/3200/1691/files/diabetes_ketoacidosis_treatment_guidelines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0419/9075/files/in_the_presence_of_mine_enemies_movie.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/6826/1020/files/86305933925.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6960/2981/files/sodajibefo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8868/2915/files/68865511095.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/9774/9154/files/dinamicas_grupales_para_romper_el_hielo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b7b911b-37da-4f9d-a7f0-bd2a004b77be/73667071288.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/0659/3696/files/fotivupuxiwebot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0480d314-3ada-4920-82c4-b204ed51ab3c/metin2_dreamfancy_7x.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7927/7467/files/minnie_mouse_cakes_1st_birthday.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7800/6437/files/30526541110.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9970/8821/files/addictive_android_games_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/7127/7718/files/mittelpunkt_b2_c1_redemittelsammlung.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/2879/3512/files/chefs_choice_diamond_hone_knife_sharpener_instructions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/9097/6162/files/74312763043.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8167/8494/files/65058646142.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38dac8bf-89bf-4c9b-87ed-cef23e41c562/the_atmosphere_an_introduction_to_meteorology_12th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0489/5143/files/84240613532.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3412/3157/files/cid_watch_online_apne_tv.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007486.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7486 3428 bytes
SHA-256: c6498eddd9ed6e6cc3b1bd048c3725a1dbecc70e41fff011575dab7399f79aaf
font_01_sfnt_off000080f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80F4 5120 bytes
SHA-256: 2a0acf95293ae2200d12e78de54a1cfed36be29d3a10953d9f10801667087f93
font_02_sfnt_off00009265.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9265 5736 bytes
SHA-256: 2a2b2de446c29b647b47008520e1a3dbf99e3765e635ff0c548b4569b480b1e5
font_03_sfnt_off0000a0bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA0BB 14708 bytes
SHA-256: 65fb6554828082264fe0bd2685dcab407f0800a3427661454027fa36a931c317
font_04_sfnt_off0000cbf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBF2 16888 bytes
SHA-256: cda6817cc47b5440db7584509ecdbaeb3124cfdf03f0826bf8118b92926e4274

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