Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bc18940fa8c93b8…

MALICIOUS

PDF

44.0 KB Created: 2020-08-30 14:16:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 9369cf3e6169c507a3516e2a0d9414eb SHA-1: 179abfcc5aa1a8a815ca47fda0b415b5299ef17d SHA-256: 8bc18940fa8c93b8a15212e76a815abcaf9df7136880014e59da25ce655644c0
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF contains a malicious redirector link pointing to 'ttraff.cc', which is flagged as malicious. Additionally, it features a link farm of 13 PDFs hosted on Shopify, suggesting an attempt to manipulate search engine results or distribute content. The presence of a visual download button lure further supports a social engineering attack. No scripts were extracted, but the combination of a malicious redirect and a link farm indicates a likely phishing or malware distribution attempt.

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.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wix?keyword=the+julian+chapter+a+wonder+story+pd In 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/1/0429/1716/7267/files/todotibinolake.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5856/9120/files/94787203694.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/0669/7115/files/53640115566.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/9206/6710/files/muvikeputepoximagiwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9118/9157/files/adiabatic_process_thermodynamics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6643/3435/files/57397688510.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/7084/0981/files/what_is_a_pro_forma_operating_statement.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7525/5972/files/que_es_el_neoliberalismo_libros.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1909/8523/files/56522133632.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6278/8245/files/fuvebabalulusukorebuk.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_1cb4107600054da8b5f169b8a7abdea4.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_fc2c3690156841729add3e999934dfc9.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/33ab24_a5ab5fd411894ec2a57da631e60ce50f.pdfIn PDF document text
    • http://tinyurl.com/gpyfn76In 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005821.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5821 5380 bytes
SHA-256: 7765f2e93cdf6387d636d3b0d7c2091240776b99af8d9dd22cf000354facf8fa
font_01_sfnt_off00006a75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A75 10140 bytes
SHA-256: 8276f808b37278085ee3e2753340dded6e10b520b1f78b924ee5a2e78152248f
font_02_sfnt_off00008d52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D52 16248 bytes
SHA-256: 7f10b5217708b7aced76a9c7cd02a51188d2af7235ea23585d094f6560042d0f