Malicious PDF — malware analysis report

Static analysis result for SHA-256 6311d8f01fdf6d2c…

MALICIOUS

PDF

45.7 KB Created: 2020-08-17 05:23:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e733bf2dfe296d002b9ab37734c1f231 SHA-1: 7e48b2ec3dfaafd8e47de82247e1c8881465768b SHA-256: 6311d8f01fdf6d2c2fb43ffe9410e252a9dc93a8ed8bfec809d11f3239e74dba
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.ru) that is flagged as malicious. The document body, though heavily obfuscated, contains a URL that aligns with the malicious redirector. This suggests the document is designed to lead users to a malicious site, likely for phishing or malware distribution, leveraging a lure related to an 'A400m crash investigation report'. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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=a400m+crash+investigation+report In PDF document text
    • http://revamaxa.solanocanyon.org/uploads/1/3/1/6/131636725/sisuvavopizabarise.pdfIn PDF document text
    • http://files.yottaearthhome.com/uploads/1/3/1/4/131437276/nukekafudikuwute.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/1/0450/7539/8821/files/vivud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9836/5340/files/zatomezisefixasagerubonat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9581/0455/files/44533447275.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/4610/4222/files/dopeliv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2114/8061/files/59177254027.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9052/5849/files/butterflies_zendaya_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8205/5842/files/xobadikimavegaxoxaxugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4338/9597/files/byte_code_editor_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0591/9903/files/losivozeboneremupoka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9162/3074/files/15285789365.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4549/4684/files/sewigumuzabukuloroso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4059/5352/files/93097770648.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8783/8886/files/voviwizugafatata.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_off0000753a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x753A 5592 bytes
SHA-256: f58c5e4267d697fc54ccf32998f5aedda3be11a95802c8b034e76ffdb2dd306f
font_01_sfnt_off00008822.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8822 9928 bytes
SHA-256: 930b61556bea6fecdbeff87bb7949141f8516769843e72be756292bb47d99b47

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