Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5d8d75c978a14a3…

MALICIOUS

PDF

63.7 KB Created: 2020-08-08 09:45:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 91b55b7b9b3d4d234a201bab49f972be SHA-1: 56315db1bbb1f30a7df619884a479e8f4a16da88 SHA-256: f5d8d75c978a14a3d7ed6b735feadd04fb282eb7d84feb84380273ca2943f63d
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a large number of embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be part of a lure related to a 'Boston airport map pdf'. The presence of numerous external PDF links suggests an attempt to manipulate search engine results or distribute further malicious content. The SE_CALLBACK_LURE heuristic indicates a potential phishing or scam context.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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=boston+airport+map+pdf In PDF document text
    • http://files.thefeduppharmacist.com/uploads/1/3/1/4/131437701/5668199.pdfIn PDF document text
    • http://wefav.stspeterandfevronia.org/uploads/1/3/1/4/131437378/1514363.pdfIn PDF document text
    • http://taxipu.thomascaplin.com/uploads/1/3/2/6/132682076/javopixajanuvovi.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/1/0435/2219/5608/files/advantages_and_disadvantages_of_intranet_and_extranet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2725/9811/files/fesotobu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7341/3028/files/87476825278.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/78108387577.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6638/2746/files/66007891379.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2381/1239/files/apuntes_sobre_defensa_nacional.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3341/9166/files/destilacion_por_arrastre_de_vapor_unam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1415/2607/files/armed_forces_tribunal_act.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6840/5413/files/10935454765.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0191/3244/files/wekizexalilixegebire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3595/9191/files/28209874276.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1187/3688/files/84381478129.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4738/6268/files/93392932492.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b7b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB7B9 5204 bytes
SHA-256: 648ae30e4f7e920de734ba92f896c5138aba51175ff3fab47810b7b7767670ab
font_01_sfnt_off0000c959.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC959 12512 bytes
SHA-256: e82bf63e93f89181c1e220a9f237ce5acf3cb15201093d59286618d25d98bb20