Malicious PDF — malware analysis report

Static analysis result for SHA-256 39ae87ff9d16af30…

MALICIOUS

PDF

115.6 KB Created: 2020-08-12 12:32:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dddece3420adf42fca89d6643e0ed455 SHA-1: 9bcb47593bbda2117a7f792addfe4c744a1d1e85 SHA-256: 39ae87ff9d16af303fa8277901b0fa8e4df57fbeec38a13dc14523d41cbe0f79
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, disguised with a keyword related to the Great Depression. This suggests a phishing or scam attempt to redirect the user to malicious content. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the presence of a malicious redirector is a high-confidence indicator of malicious intent.

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=causes+of+great+depression+1929+pdf In PDF document text
    • http://xumuku.sunsethoa.com/uploads/1/3/1/8/131856570/4d3e48426156971.pdfIn PDF document text
    • http://files.jdudleysmith-acupuncture.com/uploads/1/3/1/0/131070487/2754849.pdfIn PDF document text
    • http://files.evolvingpartnership.com/uploads/1/3/1/3/131379353/88da6.pdfIn PDF document text
    • http://boxabisa.billmitchellcreative.com/uploads/1/3/2/7/132740405/fanezamiju.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/1/0434/4093/0968/files/sisakapakewifuxosoluvapu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8119/5927/files/81079989723.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5959/9765/files/2159915037.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0614/7229/files/2196188295.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3799/0813/files/2020_land_rover_lr3_owners_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2470/9794/files/excellent_verbal_and_written_communication_skills_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5592/1822/files/tijepubog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8339/9329/files/lubenitajigozi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xidab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3191/9765/files/epigastric_hernia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1496/2848/files/godenogejolijikitexop.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
🗂 Part of campaign: billmitchellcreative.com 4 samples

Related samples 4

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_off00018629.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18629 5420 bytes
SHA-256: 520b97264b2757cb0bbfb9d8bb2e9175a092cae66244b5a7c9d3cbccf3fa2910
font_01_sfnt_off000198ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x198AC 12300 bytes
SHA-256: 7ab84b82ed58dcf2de3a9a3831027ae891d5e6f6689c1a4659b6ac815ff1ddef

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