Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5b770d4465a51dc…

MALICIOUS

PDF

67.8 KB Created: 2020-08-23 15:25:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6e6d0380e0373d48f01c5e91178cd240 SHA-1: 8f77842ffdef750339b61e54875bdf5420e75ff8 SHA-256: e5b770d4465a51dca8fc0330d1340c3ca48fdd2db387b202d2300e0e254b84d8
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text that appears to be related to a song title and the redirector URL also contains a similar keyword. The primary malicious URL identified is ttraff.ru, which is known to host redirectors. The PDF also contains a link farm, suggesting an attempt to game search engine results.

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.ru/pify?keyword=blame+the+night+remix+song In PDF document text
    • http://zorogo.blackboysshine.com/uploads/1/3/1/6/131637814/riloguginizikeposix.pdfIn PDF document text
    • http://files.eastasiair.com/uploads/1/3/0/9/130969305/be0b0f99a.pdfIn PDF document text
    • http://mopojatum.tmfherefords.com/uploads/1/3/0/7/130776418/vapazike.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0357/4432/files/34436011558.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8029/4298/files/26925064247.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6123/8168/files/legakux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7757/4557/files/cerebral_palsy_gait.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8663/4390/files/haynes_small_engine_repair_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6337/8081/files/65690767259.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6629/2389/files/58883459856.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5528/3366/files/zapekagorupipuxul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1832/0034/files/nubibolupazurufekaril.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5344/9367/files/wotixoji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5059/8562/files/vuzutegevevukar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0496/6565/files/rafis_skin_2017.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009af6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AF6 5004 bytes
SHA-256: b20f7a6084cdb4e7c5630224ed6d206a5e151f625111f7e34a263d500c2f2794
font_01_sfnt_off0000abc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xABC8 16040 bytes
SHA-256: c016053390dc568479cf45fd3f5f7e3f524b4650f265b4c9f81c2acae91951df
font_02_sfnt_off0000dd12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD12 16120 bytes
SHA-256: fb7b45e24c28c4473d0ca1c6410c593992d9a809009f9c41b5ae32c9142507dd
font_03_sfnt_off0000f1fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1FA 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34