Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6af14ab5d9736fb…

MALICIOUS

PDF

53.1 KB Created: 2020-08-18 14:20:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0151c61e2dcc4e3261913e18acce618e SHA-1: 42c28bb30348ac064e7680d404f63132bed503dc SHA-256: e6af14ab5d9736fb248551671309d6debac72ecf2cd9715c82282489641499aa
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=andrew+ng+deep+learning+course'. This URL is presented within the document body, disguised as a link to a deep learning course. The PDF also contains a large number of external links, many hosted on Shopify, which is flagged as a link farm. The ML classifier strongly indicates maliciousness.

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=andrew+ng+deep+learning+course In PDF document text
    • http://gunuru.bhavsingh.com/uploads/1/3/1/6/131637896/tanoxovozo.pdfIn PDF document text
    • http://mujuso.tennisschule-khablo.com/uploads/1/3/2/8/132814930/wiwiwoji_wiretojal_vafova.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/1/0432/0644/3163/files/86513489614.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0489/5143/files/votenagopaxuvakofifemow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8277/6729/files/rodofuwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2471/9773/files/sajotaxefuxosizabuzoxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8463/5544/files/67874951168.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3932/6365/files/9490835445.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5458/8316/files/valuvu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0675/4970/files/62455703142.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7226/6138/files/puzojagoluriratuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5495/5672/files/mekawulo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6728/4383/files/xinat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8514/3969/files/ritabozoka.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 3

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_off00009096.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9096 5320 bytes
SHA-256: e0118550f090faa265dc697ed30f95f09e6478f53a25009f7344588358c1e121
font_01_sfnt_off0000a2c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA2C4 10664 bytes
SHA-256: e6906a7c94024e476e2107e84bde71c251c49dcdd2ebcae5f0e5866a0f40683a

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