Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ba075adfd9d74d7…

MALICIOUS

PDF

47.5 KB Created: 2020-08-06 15:00:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2a56ef05d55ee1f20ff8587d4d8632e0 SHA-1: caef5d8c35517fb689e2abc103ba450348049e09 SHA-256: 1ba075adfd9d74d703db6a5269a4e18abcc8b193d2741d90af087c500ffd4231
194 Risk Score

Malware Insights

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

The PDF contains a high number of embedded URLs, with a critical heuristic firing for a malicious redirector link to 'ttraff.ru'. The document body, though heavily obfuscated, also contains this URL and other Shopify links, suggesting a link farm or redirection scheme. The ML classifier also strongly indicated maliciousness. The primary attack vector appears to be luring users to malicious infrastructure via deceptive links within the PDF.

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=marathi+english+barakhadi+chart+pdf In PDF document text
    • http://files.digital-human.org/uploads/1/3/0/8/130813639/917a870.pdfIn PDF document text
    • http://files.larsentallaridaarchitects.com/uploads/1/3/0/8/130814397/lalikel.pdfIn PDF document text
    • http://files.randrpetservices.co.uk/uploads/1/3/1/4/131482944/zomutibo.pdfIn PDF document text
    • http://files.roygrayphotography.co.uk/uploads/1/3/0/8/130813111/jadukemose.pdfIn PDF document text
    • http://files.holderdesign.net/uploads/1/3/1/4/131407029/vifanuvubi-mikaf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://smc.org.in)MeeraRegularMeera2016SMC7.0.0+20171102HussainIn PDF document text
    • http://smc.org.inhttp://smc.org.inIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/wipoxilidiwadufapoxemi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7238/0314/files/39102273360.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/5967739125.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5247/4267/files/armorseal_1000_hs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7600/9622/files/86598134544.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2371/9845/files/78288006029.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/3517/6608/files/business_communication_essentials_6th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9019/8180/files/datojivike.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1020/1499/files/nepararibajaxufulil.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
    • https://gitlab.com/smc/meera/blob/master/COPYINGIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61AC 5628 bytes
SHA-256: 2cfcea8e9597d15ecb7f4a79230c83960d82089b237aae20cb77c96c81cf1eb6
font_01_sfnt_off000074ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74CA 3048 bytes
SHA-256: b5c6b6e0c9ada0bf1c6b02372d38a6194b0fc304f51b15768a03b7bd417def48
font_02_sfnt_off000080db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80DB 10980 bytes
SHA-256: 064e186c53d8884b8c9783f2e063e9421a39eb6757b1be354a0f47b3ab0574ac
font_03_sfnt_off0000a4d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA4D3 2908 bytes
SHA-256: 5c01fc81628a4ddc974d8260f2ee9c2ac35cb451407338a1cc253165060a4abd