Malicious PDF — malware analysis report

Static analysis result for SHA-256 dacf99d67eded721…

MALICIOUS

PDF

49.0 KB Created: 2020-08-02 02:37:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 39d5784bd13336dcd3f11961dce8b5da SHA-1: d70192cea047af7e541943472c8973e311363300 SHA-256: dacf99d67eded721240cf1c69523dde50a17be72f19c008b5104faffde42601a
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector (ttraff.com). The document body, though heavily obfuscated, also contains this URL, suggesting it's a primary lure. The presence of numerous external PDF links, many hosted on shopify.com, indicates a link farm strategy. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious redirector as the primary attack vector.

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.com/pify?keyword=big+balls+song In PDF document text
    • http://files.budderpros.net/uploads/1/3/1/4/131438840/bugufodatezik.pdfIn PDF document text
    • http://files.durhamshowcasefestival.com/uploads/1/3/0/7/130775180/6742707.pdfIn PDF document text
    • http://files.sharmalabuw.org/uploads/1/3/1/3/131382721/lowikeju_wikurusomuded_bosotebuga.pdfIn PDF document text
    • http://files.theworldofmcewan.com/uploads/1/3/0/7/130738814/gibaja_tawix_wododibura_musimetal.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/1/0430/6763/7917/files/92089677380.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1827/3446/files/42672823707.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2703/8369/files/87957507985.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8421/0583/files/8085964340.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7849/2062/files/3852223439.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5035/3318/files/94134859689.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3631/9645/files/robidavetarufugitotezaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8758/4675/files/tecumseh_carburetor_adjustment_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4945/0661/files/46311533500.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9279/4774/files/23128342087.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_off00008295.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8295 4944 bytes
SHA-256: 13ce23fe633328d3be6d4f2f5a207070e6bffc95545848a3d0f17c3430824848
font_01_sfnt_off00009381.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9381 10592 bytes
SHA-256: 8662d3621001ad2da827460897be0d47549ba0cf14fa699d43515ca7706e3037

Open this report in the interactive analyzer, or submit your own file for analysis.