Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b9f8241cd64177d…

MALICIOUS

PDF

46.8 KB Created: 2020-08-05 16:46:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 48f18c499948f344e6ab4792ff216647 SHA-1: eb3fb01efcf045036c7c25ebfd6ff3106b581bf9 SHA-256: 4b9f8241cd64177d9f4b26793aabbf348cddbedbd3a7feaa7df0e1ff9eb12dd3
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a malicious redirector. The document body, though heavily obfuscated, contains a URL that points to a redirector service. This service likely leads to a malicious payload or phishing page. The presence of many links, including to Shopify, suggests a link farm or SEO poisoning attempt to disguise the malicious intent.

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=synchronous+and+asynchronous+counters+in+digital+electronics+pdf In PDF document text
    • http://veses.misskatiesdancestudio.com/uploads/1/3/0/7/130738732/1448529.pdfIn PDF document text
    • http://files.tampagoldendoodle.com/uploads/1/3/1/3/131383358/wokuwurede-putavetatug-nakovux-lujekiwetiw.pdfIn PDF document text
    • http://files.wildvalleyfarms.com/uploads/1/3/2/3/132303035/zefexuvil_xasem_figij_delofujozuve.pdfIn PDF document text
    • http://files.taylorbrothers.org/uploads/1/3/1/4/131407423/218196.pdfIn PDF document text
    • http://ritopove.mylendingleaves.com/uploads/1/3/0/8/130873851/59804d68d3806.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/1/0445/5848/3620/files/can_am_owners_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9618/7815/files/gubode.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1756/0473/files/volawawaperakeviverivu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4356/8278/files/tufokositoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6179/6248/files/javewakaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8893/7120/files/dunefudotorerokopaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5597/1492/files/71505550439.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1961/6935/files/kazoliz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5279/2982/files/procardia_xl_davis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8307/1650/files/kizatekojezitotipese.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kijajakunij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4852/5208/files/90038252904.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0718/0954/files/38025857734.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 4

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_off0000776d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x776D 5620 bytes
SHA-256: f0fc86dbafb83a93e42fecb2a40e155fa98db590d4cb0b8918ed4d2afdf0a953
font_01_sfnt_off00008a92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A92 10352 bytes
SHA-256: 441b587897263eeced465336ba8d4902652eebcfc271606fc2e563c5ab6da7d3

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