Malicious PDF — malware analysis report

Static analysis result for SHA-256 226ddc1c87d7738f…

MALICIOUS

PDF

73.9 KB Created: 2020-08-08 01:48:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 759cf1a950aec239348e133d6c4a3d41 SHA-1: 53d84e8b10f1708a4a4c2ac9c8d1279ea051d5cc SHA-256: 226ddc1c87d7738f51bec9d43b16f60d04c56423ccc0c040434f3230551a5204
194 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one critical heuristic identifying it as a malicious redirector. The document body, though heavily obfuscated, contains text referencing 'April fools day book pdf' and a URL that aligns with the malicious redirector heuristic. The presence of numerous external PDF links suggests a link farm or SEO poisoning attempt to distribute malicious content.

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.ru/pify?keyword=april+fools+day+book+pdf In PDF document text
    • http://files.cpuandmore.com/uploads/1/3/1/3/131380158/tusilasakexam_pabiz_dokafeten_kudiziw.pdfIn PDF document text
    • http://fugoso.ubchrmc.com/uploads/1/3/1/4/131406592/dudikedijaves-fivubimodux.pdfIn PDF document text
    • http://files.womenscenterbc.org/uploads/1/3/1/3/131381712/6134240.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/1/0431/4575/6821/files/zakuxakulomadoxivufuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4671/5040/files/9529046421.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6309/1112/files/likibipebakaxirixukevizoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1851/0745/files/15598178794.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xigidewepiwunabifaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5530/0249/files/60280075500.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2007/4663/files/nunifizukebudoniwoxuziri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7435/5351/files/fonezixevazo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9821/0461/files/miloganukixeroxataneg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0866/3457/files/luwup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dogudanivivakow.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_off0000dab5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAB5 5332 bytes
SHA-256: a446354d4b144190af16f6267eb5aa81bdc604b9212ed7a40eb853860398797c
font_01_sfnt_off0000ecee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECEE 14604 bytes
SHA-256: 0a628b8f5c492a06334cf3e7fad8ae881eee084f3d9881319d3f8236978b4adb

Open this report in the interactive analyzer, or submit your own file for analysis.