Malicious PDF — malware analysis report

Static analysis result for SHA-256 b76fdd3570a933f6…

MALICIOUS

PDF

43.2 KB Created: 2020-07-25 03:20:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d8e3678aaafcef37c4c1c0782abf0f05 SHA-1: 805c336d7eef3efeade9499ff148b78a845cf1d0 SHA-256: b76fdd3570a933f65c8d13b6f6408a12e4d2212ec961e04bd4f559438dc9268c
194 Risk Score

Malware Insights

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

The PDF was flagged as malicious by an ML classifier and contains a critical heuristic indicating it's a redirector link to known malicious infrastructure. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on shopify.com. The primary malicious URL identified is ttraff.ru, which is likely used to funnel victims to further malicious content or phishing pages.

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.ru/pify?keyword=lagu+smvl+lily+bahasa+indonesia In PDF document text
    • http://files.ffcivic.org/uploads/1/3/0/7/130775862/3698472.pdfIn PDF document text
    • http://files.cityofbloomsdale.com/uploads/1/3/1/8/131871633/xanukitokodab.pdfIn PDF document text
    • http://files.saveekuriforest.com/uploads/1/3/1/4/131484133/gusuzifigalora-wamasizaf-zexogavivaz-pebal.pdfIn PDF document text
    • http://files.imijwardrobe.com/uploads/1/3/0/7/130775846/c40618891a0d7e1.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/1/0440/1335/5166/files/53382370255.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6656/4520/files/54609033961.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6268/9946/files/tepitijuporapolipajimizol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9183/6572/files/jalamutajinagidadabolesiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37144816260.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5321/2060/files/9863955344.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7916/4314/files/85482883606.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0592/6809/files/17255504159.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9894/8255/files/49126399726.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9573/6988/files/lefizal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4560/0936/files/82855926652.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0845/7877/files/lejowaxekuzu.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 6

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_off000068f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68F6 5188 bytes
SHA-256: e82e447cfd82c2590579dd1e164eeb1f3f4a3e7511002a764d492f97d1a4d14d
font_01_sfnt_off00007a7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A7B 11788 bytes
SHA-256: ee55cae66affc05522b00d5703105a6a4020db524742fc4d9c9b7c61743025de

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