Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcd6177a91f50e51…

MALICIOUS

PDF

45.3 KB Created: 2020-08-22 02:03:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b7519b2ad58edac83cd492990aa2faa6 SHA-1: e0f9ad6b54834d3e75d2a40bb3c83d1fd065e29f SHA-256: fcd6177a91f50e51406d1dd1496aa8ec11b80ee925302a4cd883b0d4e3ff6248
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources, suggesting a link farm or redirection strategy. One critical heuristic identified a link to a known malicious redirector, and the ML classifier strongly indicated maliciousness. The document body, though partially corrupted, contains a title related to a lab answer, which is likely a lure to encourage users to click the embedded links.

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=soda+can+calorimetry+lab+answers In PDF document text
    • http://jibaki.napervillebedbugs.com/uploads/1/3/0/8/130815009/silexof-kofaro-riworaluguzas-benigagub.pdfIn PDF document text
    • http://repupol.creativegeniuswithin.com/uploads/1/3/0/8/130874030/1345278.pdfIn PDF document text
    • http://sabipela.hoosierbulldogrescue.com/uploads/1/3/0/7/130775732/4e7f3f84e.pdfIn PDF document text
    • http://files.bathhousebasics.com/uploads/1/3/2/6/132695302/gowapomuvogilirejiga.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/1/0430/8670/8890/files/navogomuzabonafol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5820/7643/files/53161646864.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5022/9160/files/installation_reporting_services_2016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4653/5322/files/fivivatate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7051/1521/files/fevivekujodufiboxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7492/6230/files/catalogue_schneider_odace.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5457/8334/files/85768616302.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tapowizilefaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5797/1362/files/nine_inch_nails_deep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6268/0984/files/gowumaxogu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5338/2822/files/gender_reveal_sheet_cake_ideas.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 7

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_off000069a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69A0 5524 bytes
SHA-256: 060e4ae7f86c5407abcbfe902bdb376160d648e5edf85a0057a6d496abdb4f9b
font_01_sfnt_off00007c5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C5C 14000 bytes
SHA-256: efbcc37b2b7ada964dd4768028a59eb95cec3057f3c5976ae31157446c923d09

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