Malicious PDF — malware analysis report

Static analysis result for SHA-256 e22a1878dfb27d00…

MALICIOUS

PDF

33.3 KB Created: 2020-08-04 22:53:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a9bfa4108631dd239160bd2213be0e5f SHA-1: e87b90c89b53b5d6f9268a8a9ff2c5f21a966719 SHA-256: e22a1878dfb27d00beafd240c3d0634e056143133413878079ba9ec2202db345
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector. The document body, though obfuscated, contains text related to psychology and quality of life, likely as a lure. The heuristic firings confirm the presence of malicious redirector links and a link farm, indicating an attempt to drive traffic to malicious sites. No scripts were extracted from this sample.

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/wb?keyword=psicologia%20de%20la%20salud%20y%20calidad%20de%20vida%20pdf In PDF document text
    • http://files.jlafabrication.com/uploads/1/3/1/4/131438495/2988019.pdfIn PDF document text
    • http://files.mrzdrake.com/uploads/1/3/1/6/131607163/7849334.pdfIn PDF document text
    • http://files.universityroadhouse.com/uploads/1/3/1/3/131383383/d4b9f16a274.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/1/0434/7556/6749/files/23954040017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2828/1506/files/kikemasajeruzamadikinedow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7692/0220/files/54353426248.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9201/6280/files/kowasigibopufonol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5553/8591/files/99261139874.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9885/7891/files/36316216581.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6568/8743/files/29212575472.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8475/8696/files/baribanof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6073/1803/files/lowes_livingston_tx.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5675/1002/files/wumufesus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0595/0626/files/60125063833.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7448/6421/files/40341959720.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0288/8351/files/nuxefoxuroruxunidaran.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_off000045e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x45E6 5392 bytes
SHA-256: 4ab1e6d90f3588106a88529ac41280c17a7e564d2ea9dc7a039553b0d9f27f07
font_01_sfnt_off00005865.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5865 9432 bytes
SHA-256: d41d3155e7c19e42883562097a3265be96f33d158b129a9b4d87980e7f616b2e

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