Malicious PDF — malware analysis report

Static analysis result for SHA-256 efaa27635ef914df…

MALICIOUS

PDF

45.0 KB Created: 2020-07-31 20:21:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 47c2f3523200937d7d66f79937c91cdc SHA-1: 1dffce4645b89ec5c787d19c4bfd677252b4d14c SHA-256: efaa27635ef914df504a6153e77b539cee0326c831f864f349a01f3d3a01e77b
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure related to a thermodynamics PDF, and includes the malicious URL. The presence of numerous Shopify links suggests an attempt to blend malicious content with benign-looking file hosting.

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=classical+and+statistical+thermodynamics+carter+pdf In PDF document text
    • http://files.180degrees.org/uploads/1/3/2/3/132302732/matajelozotafetiruwa.pdfIn PDF document text
    • http://files.ginamagnoliaart.com/uploads/1/3/1/4/131454459/4823787.pdfIn PDF document text
    • http://files.hamptonplaceclt.com/uploads/1/3/1/3/131380845/zewafogukepa.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/1/0436/2836/3939/files/wijopamatizopefiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9743/7848/files/75171588967.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7234/6526/files/ladija.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zugazad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5276/0224/files/motuliwupufogadesujo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4252/9695/files/44562527371.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9262/1978/files/mosof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2607/8106/files/5791364836.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6720/2974/files/gejabepixikafikoloriga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2763/5096/files/bigigotoxopepavener.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5804/4826/files/zuzazufefikizivuvul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4183/2615/files/belagimu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2479/3245/files/84265923201.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 5

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_off00007082.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7082 5404 bytes
SHA-256: 907c0b243e9737f4eeffaff4efca0fb616ad6e98e43aa2660c9f9af320c438ab
font_01_sfnt_off000082b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82B6 10520 bytes
SHA-256: ac1d3867fe93dfd7db7ad24a58756f202751becaa4dc814a083f38b045196ffb

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