Malicious PDF — malware analysis report

Static analysis result for SHA-256 56be5fd2c14bdad4…

MALICIOUS

PDF

46.7 KB Created: 2020-08-18 15:42:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ef69593b779966aceadce90f48bbc40c SHA-1: d1bbee75f271c4df9deb61a4da9282a5fca62ceb SHA-256: 56be5fd2c14bdad4c84d8caf00aefd2ad86dd9022e44651c78e6b430db155dce
194 Risk Score

Malware Insights

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

The PDF contains embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Android phone recovery app' and URLs, reinforcing the lure. The ML classifier strongly indicated maliciousness, and the PDF structure includes a link farm, suggesting an attempt to distribute malicious content or engage in SEO manipulation for phishing.

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=android+phone+recovery+app In PDF document text
    • http://files.transformation-travel.com/uploads/1/3/0/7/130739669/vinuwu.pdfIn PDF document text
    • http://lixaji.symphonievents.com/uploads/1/3/1/1/131164250/filosa-sugisaj.pdfIn PDF document text
    • http://files.beingaum.com/uploads/1/3/1/4/131436978/rawitiposojize_guxebafises_feferatub_vesuxurogadaxav.pdfIn PDF document text
    • http://zobekow.deannaheathrealty.com/uploads/1/3/0/7/130739561/zudotub.pdfIn PDF document text
    • http://rasufo.dayafoundation.org/uploads/1/3/0/7/130776485/maxitemagesufe_tuwapunikofemet_vetujapega.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/1/0435/4339/6506/files/80320439486.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6849/6798/files/osmosis_worksheet_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7141/4173/files/wuveji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8568/5153/files/31033577164.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5104/7329/files/functional_areas_of_business_organization.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/8424/7193/files/95235862923.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8030/3263/files/how_to_install_sseedit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9693/2501/files/838053688.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4549/4684/files/54326318443.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 5

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_off00007aa6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AA6 5104 bytes
SHA-256: c9787ba9840d68ec56768d630f494e73e39ccc1fbe760486b52c00104154833d
font_01_sfnt_off00008bfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BFA 10068 bytes
SHA-256: c4e710b5396893957c5bc638441eeda1dc1b1ddf5a88f163460f86c5ee11e492

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