Malicious PDF — malware analysis report

Static analysis result for SHA-256 f048757fd1c956c8…

MALICIOUS

PDF

40.3 KB Created: 2020-08-04 23:39:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 56a602b739138e725b844e27b521f9b1 SHA-1: 936d3e7db3259d869254b516728208ace1d943ed SHA-256: f048757fd1c956c8016d5c377263b3c848d10aad94f7f45bb61a2e9ee41c3b84
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing indicating it links to a known malicious redirector, specifically 'https://ttraff.cc/pify?keyword=catalogo+de+bujias+ngk+2020+pdf+mexico'. Additionally, the PDF exhibits characteristics of a link farm, embedding numerous external PDF links, many of which point to unknown domains. The document body, though heavily obfuscated, also contains the malicious redirector URL, reinforcing the lure. The primary attack pattern involves directing users to malicious infrastructure under the guise of a product catalog.

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.cc/pify?keyword=catalogo+de+bujias+ngk+2020+pdf+mexico In PDF document text
    • http://files.ubwaosu.com/uploads/1/3/1/3/131383651/wasugegemijawof-rifevogali-muronevu.pdfIn PDF document text
    • http://files.militarylawpro.com/uploads/1/3/1/1/131163613/9287811.pdfIn PDF document text
    • http://files.rubiis.com/uploads/1/3/0/8/130874544/keriwidozaxitiv.pdfIn PDF document text
    • http://xubuf.noarderljocht.com/uploads/1/3/1/6/131606165/gazuba-siwegasa-zurisedamedupa.pdfIn PDF document text
    • http://files.martin-watzinger.com/uploads/1/3/1/4/131437233/694bc50c20e19.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/1/0431/1564/3031/files/natopekawofijejuwurutaduj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6653/8649/files/59129120191.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3006/0955/files/zunizukonu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9091/2159/files/dowimikigiwixavekopip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8901/1612/files/sutagugululomiruluro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2218/8701/files/wosaveboraxeminixa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mupuxisupevijerabufogete.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9463/8749/files/leniveruvidifejitupubaje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8346/3832/files/61271638383.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2452/3170/files/85_monte_carlo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2802/9345/files/xegapepikowuzaxereredukul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8261/0843/files/what_is_static_in_java.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9156/6493/files/ap_style_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3301/0074/files/pasusewegoxototejazup.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_off00005d0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D0F 5908 bytes
SHA-256: 4503f44c0f7c0115afa36127af576020e8ea0f64254fc1f2bdc4bc674e52a882
font_01_sfnt_off00007123.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7123 10292 bytes
SHA-256: cc33a4b8f582d8de1952371ae601354973d99d4a4984b53f85fa6d5e48cd6443