Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe215f3aa71d5ba4…

MALICIOUS

PDF

54.6 KB Created: 2020-10-14 21:44:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 415de5da7405963f1f228c8dadd93d47 SHA-1: 546029a53f423de6abe123c2df19ac4e25a9b578 SHA-256: fe215f3aa71d5ba4b7e957ff112ae3d9681b425d967b77eeff220f24bc741121
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://cctraff.ru/strik?keyword=abc+radio+app+apk In PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/8279107.pdfIn PDF document text
    • https://xisubuto.weebly.com/uploads/1/3/1/3/131380177/d9a41.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/duwivif.pdfIn PDF document text
    • https://besiwalufeg.weebly.com/uploads/1/3/2/6/132696214/fad7f7.pdfIn PDF document text
    • https://wepugimi.weebly.com/uploads/1/3/1/0/131070973/d5583.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366388/normal_5f871e329a9a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366359/normal_5f870dc518187.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366028/normal_5f87075690bba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366043/normal_5f873a413f4ac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366317/normal_5f8725d38ae85.pdfIn PDF document text
    • https://site-1048576.mozfiles.com/files/1048576/31278306663.pdfIn PDF document text
    • https://site-1040507.mozfiles.com/files/1040507/poxunagamawugadexapafe.pdfIn PDF document text
    • https://site-1043764.mozfiles.com/files/1043764/lipiwekajutebarivikigu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/3253/3922/files/wadepopuwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8147/5267/files/popular_commedia_dellarte_plays.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6631/7205/files/leaf_shape_names.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/2451/5989/files/silat_martial_arts_near_me.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3874/2440/files/evil_dead_a_fistful_of_boomstick_cheats.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/5937/0904/files/nitro_editor_full.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/7568/5537/files/wahoo_board_game.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn 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_off00006624.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6624 6440 bytes
SHA-256: edf517a561ed5132c6c1d5718ac6ff9d870a00e6f43a91762fd168a2279cca75
font_01_sfnt_off0000761a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x761A 5048 bytes
SHA-256: e69cf385c406912b486dd963b5cb23a9996ef64b0a74631e3866ce06b9e92e55
font_02_sfnt_off00008742.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8742 3460 bytes
SHA-256: 3fa9b4e3120a1d665c23a6b67142d3b42c68f631c75b10054e163c53108e4e0c
font_03_sfnt_off00009425.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9425 10420 bytes
SHA-256: 9112a953d0f74e44a647d3ef2ddeceb7661be427d7490be38dff1df4de5cd0ed
font_04_sfnt_off0000b7fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB7FB 16036 bytes
SHA-256: 149cab45689013e99d1aa520d2e5234663aa5d8577b6aae5e423b5d60aeda4c1