Malicious PDF — malware analysis report

Static analysis result for SHA-256 203206771b919fde…

MALICIOUS

PDF

38.0 KB Created: 2020-08-10 17:39:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b0a6db60337efb3e9b0e742e64806273 SHA-1: a959e67dd6de95b178b84ff7ecaf937cc4dd41e0 SHA-256: 203206771b919fde472851bb9761203845bacbe836a60da036806c5420972172
234 Risk Score

Malware Insights

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

The PDF contains a prominent link to a known malicious redirector, ttraff.cc, which is likely intended to lead the user to a malicious site. The document body and heuristics indicate a lure related to 'Accsap pdf download', suggesting a phishing or scam attempt. The presence of a large number of external PDF links, many hosted on Shopify, further supports the SEO-based link farm tactic to obscure the malicious redirector.

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=accsap+pdf+download In PDF document text
    • http://files.ldcustoms.com/uploads/1/3/1/4/131438443/bd077e3a52ef.pdfIn PDF document text
    • http://wabisiba.ildanceofficials.com/uploads/1/3/1/6/131606289/fejor.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/1/0432/9363/8822/files/nhtsa_sfst_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4433/8854/files/rufodobapegarojitoxojafi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9725/8136/files/bunozefalegobiza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8893/7120/files/dunefudotorerokopaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5082/7929/files/74384545759.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2878/1988/files/list_of_spelling_words_for_grade_3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0091/4343/files/hot_wire_anemometer_thermal_method.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1787/1265/files/fedavukupixi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/lonukaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/amazon_vision_statement.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/8281/3341/files/acta_constitutiva_de_sociedad_civil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1715/0368/files/sosebet.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_off00005449.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5449 5136 bytes
SHA-256: b977a8c168882d06d9ce02241cdae90a62f452510429322383ead44bc78108b5
font_01_sfnt_off000065df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65DF 10952 bytes
SHA-256: aa57364a0c6836f6e8f1538ff8b7b8958d59aec2a6316882401039373824f3c6