Malicious PDF — malware analysis report

Static analysis result for SHA-256 b44d2c87a74a37d3…

MALICIOUS

PDF

41.4 KB Created: 2020-08-24 20:00:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8aa2dd05a5c22129693a8a4eb11905e0 SHA-1: 8823cb01c9b1a726e455fd20ecebfd3573df8040 SHA-256: b44d2c87a74a37d35d611dd575e35e9bc70d426df2769d93c6cfff7d1a300b5f
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically identified as a malicious redirector. The document body text, though heavily obfuscated, contains a reference to the malicious URL. The heuristic firings indicate the PDF is acting as a redirector and contains a link farm, suggesting an attempt to drive traffic to malicious infrastructure.

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=green+supply+chain+management+journal+pdf In PDF document text
    • http://vajeroja.myportlandtherapist.com/uploads/1/3/1/4/131407178/pafaduleda.pdfIn PDF document text
    • http://files.shamanicarawakpriestess.com/uploads/1/3/1/3/131380343/3839298.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/1/0433/4462/5813/files/gegebuxavisodunoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5488/1175/files/conformational_analysis_of_cycloalkanes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2371/9845/files/mosuxudagapo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1758/2230/files/58668262205.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9263/1962/files/kelpstone_pet_battle_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0294/2872/files/64439078575.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3428/0087/files/92477443519.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5359/6324/files/56008510110.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0942/6079/files/68987299248.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2313/7957/files/lixalujojavezazug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4421/6730/files/anticipatory_grief.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 2

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_off0000617d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x617D 5776 bytes
SHA-256: ec3ca9ba9ae0799072b9d116d3d19702cddfd7cce20647a1a11f8e4fe74a85de
font_01_sfnt_off00007501.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7501 10428 bytes
SHA-256: c634c5e68a072f4b2f7afb3b43106d9c3fa4a89e81d3033c3891c74746793eac

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