Malicious PDF — malware analysis report

Static analysis result for SHA-256 94c56f94a575d8e5…

MALICIOUS

PDF

78.7 KB Created: 2020-08-04 02:43:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 71570ac963bdc46ff509143f3e4d903b SHA-1: c067e013401d56456df72a4568b468771da779c8 SHA-256: 94c56f94a575d8e5165d47d1d5600ccecd1793f8788c723e390f8925eb78ee83
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains numerous links, many of which point to a link farm hosted on Shopify. One critical heuristic identified a link to a known malicious redirector, 'ttraff.cc', which is designed to obscure the final destination. The document body itself contains the same text as the URL query parameter, suggesting a lure to trick users into clicking the malicious link. No scripts were extracted from this sample.

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.cc/pify?keyword=prove+negative+binomial+distribution+is+a+pdf In PDF document text
    • http://vowutetop.feehanlitmag.com/uploads/1/3/2/7/132712323/nisatapezer_munimod_fipixap.pdfIn PDF document text
    • http://files.lowerywelding.com/uploads/1/3/1/4/131408899/9a2c8.pdfIn PDF document text
    • http://files.dawnlyndiehl.com/uploads/1/3/2/6/132680890/fomiroxadadafudonel.pdfIn PDF document text
    • http://files.studyenglish121.com/uploads/1/3/0/8/130814232/kuxibokudixuwowuto.pdfIn PDF document text
    • http://files.lightningridgerealestate.com.au/uploads/1/3/2/8/132815961/tuwor.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/1/0433/9118/9157/files/penulaxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3492/7513/files/xaxoxasixe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0389/4171/files/68062908051.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1593/7948/files/wagawelevulizajon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9409/7576/files/1064714640.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2790/7239/files/76213239348.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8524/2269/files/24093794720.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3249/4751/files/lurorupofuxarunodijulawa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/monaromuxulez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2086/1092/files/stormlight_archive_wit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6524/4832/files/nowewinenavobegizu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8799/5814/files/sifutuxitazu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7661/6353/files/diet_for_celiac_disease.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3033/0016/files/17933145515.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d004.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD004 5560 bytes
SHA-256: 8fdaf63779c703e457dba07cdc2c3bfbe0d7d0fb792a5b3e49d206d229b1bb53
font_01_sfnt_off0000e2dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2DD 16112 bytes
SHA-256: 0bcd8b9755e4bb8b4ab90e0063bbc4cdcc73bd76b38430bf3f25243aab7d6901
font_02_sfnt_off0001167c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1167C 16492 bytes
SHA-256: 8cabc27d492a12ebe2f7b6975dd76b06c1575470bc4f7a9c4e8491e146842a71