Malicious PDF — malware analysis report

Static analysis result for SHA-256 43df36a648759e06…

MALICIOUS

PDF

35.3 KB Created: 2020-08-01 22:25:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cccd3348b3db57bcc31cc3668d230647 SHA-1: c9815d99b8aa475f1f0a873c1b918c1e51652613 SHA-256: 43df36a648759e061dc0f943f4ea2a946075406673e39e829e221664e8ef5268
194 Risk Score

Malware Insights

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

The PDF document was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The ML classifier also strongly indicated maliciousness. The document body contains a URL that points to a redirector, which is likely intended to lead the user to a malicious site. The presence of numerous embedded links suggests a drive-by download or phishing attempt.

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=instructors+corner+red+cross In PDF document text
    • http://files.risingnorthproperties.com/uploads/1/3/1/4/131407051/3233322.pdfIn PDF document text
    • http://files.100waystolisten.com/uploads/1/3/0/9/130969311/pamexatul.pdfIn PDF document text
    • http://files.abcdcoh.org/uploads/1/3/1/3/131384070/vexepadovefa.pdfIn PDF document text
    • http://files.rgreco-and-mchristian-presents.com/uploads/1/3/0/7/130775280/5431734.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1245/4560/files/jimikofam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3804/0487/files/29678576086.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5511/1589/files/83323838977.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4217/7181/files/25072697165.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sasukeseduvemuledup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/gefikisubofe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1647/8110/files/pikojusimiwuxut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5734/7741/files/1581798960.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9943/7721/files/the_summer_i_turned_pretty_movie.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 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000042d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x42D6 4464 bytes
SHA-256: 7bf6e7dd47f31a1b8c69b895a82641b3c4076b6797af76b684c3f538146a8cec
font_01_sfnt_off000051f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51F8 9492 bytes
SHA-256: 2408c23e250f0bbc25976f01142cc46d73cfa7f9f2050aeca274daf8ee3ce214
font_02_sfnt_off00007267.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7267 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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