Malicious PDF — malware analysis report

Static analysis result for SHA-256 2086d30b528619c5…

MALICIOUS

PDF

41.3 KB Created: 2020-08-23 23:50:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 360849893651089a9334ca219b488378 SHA-1: 048e799a90fb6e1fcd4f0f0dfcb44a0e4082fc40 SHA-256: 2086d30b528619c544926732dd48991792e7723f3b71db507959276145068675
194 Risk Score

Malware Insights

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

The PDF contains a link that redirects to known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to an internship report format, suggesting a lure. The PDF also exhibits characteristics of a link farm, with numerous external PDF links, many hosted on Shopify. The ML classifier strongly flagged this PDF as malicious.

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=summer+internship+project+report+format+for+mba In PDF document text
    • http://gubaxaf.maevemccarthy.net/uploads/1/3/0/7/130776433/3587657.pdfIn PDF document text
    • http://kipegef.phstravelclub.org/uploads/1/3/0/7/130775840/visogif.pdfIn PDF document text
    • http://files.nanny-bears.co.uk/uploads/1/3/2/3/132303175/nugasav-jeponuroxados-zikefupozona-zolikukokese.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/1/0434/5220/3161/files/33160880067.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7298/8071/files/67900068783.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5967/5290/files/58058097859.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5015/5688/files/10312119836.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8665/2316/files/vazezowowutefefajinuba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6617/9230/files/37057116285.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7252/8292/files/saucony_hurricane_vs_guide_iso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4336/4759/files/integrated_marketing_communications_plan_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5808/6559/files/banale_teri_baby_doll_remix_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7328/2983/files/finale_music_software.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_off00006252.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6252 5544 bytes
SHA-256: c17c1ce99b1c41f3827234e12860f39251204e0241ad4a55a2e64791716be52f
font_01_sfnt_off000074fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74FB 10300 bytes
SHA-256: a269f97026ed11e9be83fdbde8286e1f40aea907267eb15d538e5397ac81e959

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