Malicious PDF — malware analysis report

Static analysis result for SHA-256 071a5bf631f4aca9…

MALICIOUS

PDF

38.9 KB Created: 2020-08-20 20:11:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 41469a345a8441bdee449ecf2116a469 SHA-1: 271142d6bbd94a9ba6ff83d540ca477a75adb924 SHA-256: 071a5bf631f4aca9fb8b32ccf7c7106c6c9b74d50343001de1b795d8c1681dc1
194 Risk Score

Malware Insights

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

The PDF contains numerous links designed to appear as legitimate downloads, but they redirect to malicious infrastructure. Specifically, the link https://ttraff.ru/pify?keyword=high+school+english+grammar+book+pdf is identified as a malicious redirector. The document body and embedded links suggest a phishing attempt disguised as a free book download, likely to lead users to a compromised site or malware.

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=high+school+english+grammar+book+pdf In PDF document text
    • http://files.fullcrescentpress.com/uploads/1/3/0/7/130739513/sewomatowuvuk_zoseritalu_pexafokak.pdfIn PDF document text
    • http://files.poehaku.com/uploads/1/3/1/6/131607239/ab7f23f.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/1/0434/0740/9308/files/556195212.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3095/4655/files/lomora.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7826/2689/files/convert_word_to_excel_small.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3781/0075/files/loxujoduli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/2777/1040/files/medical_physical_fitness_certificate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2426/8968/files/bridge_to_terabithia_questions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8663/3377/files/errata_sheet_cplr.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7358/3781/files/99099533087.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/suramagufumaxuragozud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/3344/8868/files/aims_and_objectives_of_dissolution_of_partnership_firm.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 8

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_off00005920.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5920 5732 bytes
SHA-256: f44a293e3f0193212ffa43349263674b2970b6250bdf20748807f316aa276166
font_01_sfnt_off00006c66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C66 10060 bytes
SHA-256: 207eb93d9f8bb98690325953e43f6ed204ace071c171c7d0876f4ee0eb65a3b4

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