Malicious PDF — malware analysis report

Static analysis result for SHA-256 844e23a98dcca8a4…

MALICIOUS

PDF

57.3 KB Created: 2020-07-31 03:48:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 43acf12337b05fcf970fd7d08770eda0 SHA-1: 94682c71f26bd88696e5e869ae947a50c8de839c SHA-256: 844e23a98dcca8a4b3b401eb5671eb784521db9d587193247400b0d7459f66a8
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple links to a redirector URL, identified as a malicious link farm and SEO redirector. The document body, though heavily obfuscated, appears to be related to a 'free download' lure, consistent with phishing or scam attempts. The ML classifier strongly indicated maliciousness, and the presence of redirector links suggests an attempt to funnel users to malicious sites.

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=brian+tracy+maximum+achievement+pdf+free+download In PDF document text
    • http://files.libertyshelties.com/uploads/1/3/0/7/130776393/kasanilowaza.pdfIn PDF document text
    • http://files.alissaellisphd.com/uploads/1/3/1/4/131452827/844207.pdfIn PDF document text
    • http://files.mariannewardart.com/uploads/1/3/0/7/130775108/e3b1e67f67e3a.pdfIn PDF document text
    • http://files.calvarychapelhomer.com/uploads/1/3/2/6/132695651/rasufe.pdfIn PDF document text
    • http://files.praxismachinecodinglessons.com/uploads/1/3/2/3/132303388/tefuzujorenufo-zedunedov.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/1/0432/1312/7835/files/32601506987.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5857/7046/files/wapopepika.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/ziraxabagegowivuxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4053/0854/files/6053258998.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1540/4695/files/foriwekowi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7016/8986/files/gevoxudolezokirot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5419/4085/files/vuxorujimixa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0803/2922/files/17664579901.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57032902602.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 8

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_off0000a21e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA21E 5472 bytes
SHA-256: 3ca30715e601afe1d0d9c6ef99a13fb3a1870c67934b39fa0d02dca62260d1dd
font_01_sfnt_off0000b4a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4A0 10224 bytes
SHA-256: 57f2778fe2d4f7b3766a582cc8ebc884ddb261d1c9c994d76e60dead34cd3d9a

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