Malicious PDF — malware analysis report

Static analysis result for SHA-256 944bc40c70d52e0f…

MALICIOUS

PDF

52.8 KB Created: 2020-07-30 16:18:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bb001aa3d762d4b64bc5efc851c85f74 SHA-1: 4d2e21378a9f4e2c90f620f70127e74a3954ecac SHA-256: 944bc40c70d52e0f77336e9178c65006810948e724072fb5d3c5a0e357df0333
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One of these links redirects to a known malicious domain, ttraff.com, indicating a phishing or redirection attempt. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, and the document body was heavily obfuscated.

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.com/pify?keyword=role+of+chaperones+in+protein+folding+pdf In PDF document text
    • http://files.teenchefjordan.com/uploads/1/3/1/4/131455722/6347779.pdfIn PDF document text
    • http://files.897788976207812023.com/uploads/1/3/1/6/131606733/xerotan_wosofazanotovo_dapomisi_gegawovaj.pdfIn PDF document text
    • http://files.naauhawaii.com/uploads/1/3/1/1/131163872/viwexe-neramexidasiki-lazewilibeg.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/1/0431/3936/7061/files/xagowibewefetip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8368/5270/files/ruxugerazukejiximitusam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8790/4422/files/29151051017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2123/6386/files/34343060365.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0506/6913/files/tugulegurapurimerirurumi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7580/6119/files/xekupagixoluzizeluxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8402/9854/files/kosumuwokibenifo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1959/7981/files/fogunojafofokizogodumu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9437/6605/files/suzozomepuje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6666/8694/files/90204736019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6309/9040/files/89486285246.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8649/5400/files/47261152055.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9422/8630/files/43775487563.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85755015361.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5000/0791/files/38408412704.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

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008fe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FE2 5212 bytes
SHA-256: f3701c9d49bd5da41dbafae10a46bcf49022c31f9a4620d0a88e1aea75b5a048
font_01_sfnt_off0000a193.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA193 10624 bytes
SHA-256: 6502b7955cc1b2be775a67d1fea8affb6133b1a38be715a600a93c6fe66f7694

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