Malicious PDF — malware analysis report

Static analysis result for SHA-256 5187298e77d62f29…

MALICIOUS

PDF

50.9 KB Created: 2020-08-19 16:09:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1c16a8ce43c26776a4c367d7911e1108 SHA-1: c602050e898cd23e924362de8ccdc66a6cffa77f SHA-256: 5187298e77d62f29184eb2e562ada58420c176679ce5421ca5156ce1ab6e2620
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.ru/pify?keyword=aswath+damodaran+on+valuation+pdf', is designed to lure users to malicious infrastructure. The file also contains a large number of links to Shopify-hosted PDFs, suggesting a link farm or SEO poisoning attempt. No scripts were extracted, but the presence of the malicious redirector is a strong indicator of a phishing or redirection attack.

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=aswath+damodaran+on+valuation+pdf In PDF document text
    • http://files.drscapp.ca/uploads/1/3/1/3/131381772/95bead6a7b10dc0.pdfIn PDF document text
    • http://files.endurancepilatesandyoga.com/uploads/1/3/0/7/130738892/2b775ede49.pdfIn PDF document text
    • http://files.arrowhead-equipment.com/uploads/1/3/0/7/130776263/lawemuxumuzo_monawekap_vonin.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/1/0434/5964/1496/files/rovevixowinimaxenon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1621/4939/files/sideno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0517/4183/files/castrol_edge_titanium_fst_a3_b4_0w_40.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7473/8593/files/butuxavudajawaramuko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4142/1472/files/49972502315.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3915/2535/files/22_oxidation-_reduction_reactions_practice_problems_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2623/6063/files/zonakusivikevovenuze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1393/0142/files/25954139374.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6255/0940/files/vetexiruz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mirizopenifipometetotagoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0264/2075/files/81151420634.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 4

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_off000088a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88A4 5420 bytes
SHA-256: 0a5c516eb042f6ba047cc18514588145af0d0169e41ce4a9586449226e546a43
font_01_sfnt_off00009afb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AFB 10544 bytes
SHA-256: bc69af9b6e9b98d9036135c0f026f08c76404fdcfcf75301d6db42caad552d6d

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