Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f9ec7fdd5377337…

MALICIOUS

PDF

65.3 KB Created: 2020-08-03 13:30:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2473a164b4cf163eb656b6d9b0447847 SHA-1: 037b5ac1e3754ac545b3f60d57ac6f38f221e747 SHA-256: 6f9ec7fdd53773379866f713f0911fccd473ce0d19758b3a4184183ea5b4a317
234 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, many of which are identified as part of a link farm or redirector infrastructure. The primary redirector URL, https://ttraff.cc/pify?keyword=biblia+de+estudio+inductivo+reina+valera+1960+pdf, is used to obscure the final destination, which is likely malicious. The ML classifier strongly indicates maliciousness, and the presence of SEO-optimized links suggests a phishing or malware distribution campaign.

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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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.cc/pify?keyword=biblia+de+estudio+inductivo+reina+valera+1960+pdf In PDF document text
    • http://nimufipo.breathefreeme.org/uploads/1/3/1/4/131453541/5246586.pdfIn PDF document text
    • http://files.rhadpc.com/uploads/1/3/1/8/131871586/foxaxifasavuxu.pdfIn PDF document text
    • http://mefekibeb.utcifc.com/uploads/1/3/0/8/130873822/9468451.pdfIn PDF document text
    • http://netefiv.hopeofglorychristinmebriankinnett.com/uploads/1/3/1/3/131380126/8502417.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/1/0427/6974/4028/files/bonifisonewotatapusejona.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8121/1810/files/dazonegavijemif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8353/8331/files/34704840307.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4434/6792/files/44617800261.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5512/8477/files/bezuzi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8028/6372/files/35834534489.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3293/6605/files/xulurusarixeduxaxisuxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2961/7057/files/wirudekowamadewibesorefut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1125/2132/files/zewigalemo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6404/1373/files/ashcroft_mermin_solid_state_physics_solutions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4462/5822/files/17074696650.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8034/3961/files/meroruzadesijalijewodavur.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_off0000bc6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC6C 5904 bytes
SHA-256: 1df6b85b033ad4b02f49877ba17db480c10ea0fba360a6c825c908cf916e9167
font_01_sfnt_off0000d091.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD091 11500 bytes
SHA-256: 8d693c7f4d7baa3a653a7a019023ea2fd5fdba876ee9863b6d00ab546b28f3e5