Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd56f8a5eaf187a0…

MALICIOUS

PDF

45.4 KB Created: 2020-10-28 04:17:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: b2fb1a5bf15f6954c9b1d3bdfd5ee04b SHA-1: 4fdbc96a828cd3c2181245927a0faf24bd96a0e9 SHA-256: fd56f8a5eaf187a0c899cf276c06a0489d39b8b4243cccdd0f4c419c87f680f3
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.link/123?keyword=samuel+l+jackson+jurassic+park+meme In PDF document text
    • https://dodivimibo.weebly.com/uploads/1/3/4/3/134305777/ee4ceff2b6.pdfIn PDF document text
    • https://juragubiv.weebly.com/uploads/1/3/0/8/130874328/88efb82.pdfIn PDF document text
    • https://jewajufigojoxi.weebly.com/uploads/1/3/1/4/131438211/ee09cbaffd6c3.pdfIn PDF document text
    • https://xumogimunosu.weebly.com/uploads/1/3/1/6/131607683/0178282ef9a.pdfIn PDF document text
    • https://liloxowilobo.weebly.com/uploads/1/3/4/2/134265539/ca8d05707.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000631b.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000631b.bin)
    • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off000099c4.bin)
    • https://s3.amazonaws.com/migivewuwe/vepubikanason.pdfIn PDF document text
    • https://s3.amazonaws.com/zuguvoxoki/jvvnl_junior_accountant_syllabus_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/gumegulaxi/zoditijedagegewadixetu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9392/7111/files/43811523260.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/8304/5293/files/google_adsense_apk_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/7280/7610/files/wuwuzab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8935/4142/files/can_you_download_songs_to_android_phone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/2417/7093/files/53258846767.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e03a183e-36b3-4e04-97ad-4642a40a67a4/an_introduction_to_language_10th_edi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c43b488-f64f-4e23-bf69-4cea9f5119f3/59038034834.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84bb9853-f9e4-4574-ab50-5c1aaaacadf1/63649952535.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75cf6bd2-ef9d-4555-84de-49dc0f5e1ce0/17533414618.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ce3b3d3-beda-424c-abee-44f378144df6/wojitifunawenepo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17685c9c-4249-46a3-ae0b-8df4f3f75bcf/47435418927.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83063dd2-31b7-4b5b-8fd4-004a32dd3086/pezibesoxenidixib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2040/1316/files/dofevudixajoma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/5929/8471/files/pogil_activities_for_high_school_biology_properties_of_water.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/3803/8942/files/manual_for_maytag_washer_mvwx655dw.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 extracted file (font_00_sfnt_off0000631b.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000631b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x631B 5124 bytes
SHA-256: 72dbea71efb1a0acf1c5b86be8a2af3c0514de96b26c5d81edcb1afdfcefe1ad
font_01_sfnt_off00007460.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7460 11464 bytes
SHA-256: 37d787f13ae3d7a25f2f688f301d59bb8ecbc71b0a1cad991d5216a477d20b40
font_02_sfnt_off000099c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99C4 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e