Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d3bb8f620976aa4…

MALICIOUS

PDF

39.4 KB Created: 2020-08-20 14:04:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 97c3bb1bdc7c319fe489db59f1529241 SHA-1: 48b6d5015271f426ac455dce7f8e2f9456488ab4 SHA-256: 1d3bb8f620976aa487547d4e5bac56452c02ca4375289763371868c5723b6250
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 as a tutorial. This indicates a phishing or social engineering attempt to lead the user to malicious content. The document body, though heavily obfuscated, contains the same URL and references to other PDFs hosted on Shopify, likely part of a link farm to improve search engine ranking for malicious content. The ML classifier strongly supports the malicious nature of this PDF.

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=labview+scada+tutorial+pdf In PDF document text
    • http://files.tlcsupportservices.org/uploads/1/3/1/4/131437919/623035c45fe.pdfIn PDF document text
    • http://files.titleny.com/uploads/1/3/1/0/131070072/2476601.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/1/0429/8421/0583/files/96337496978.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/6338597663.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/allen_bradley_plc_programming_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/73876088714.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9273/8201/files/davaragonomifexexi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5063/1319/files/xuseb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1124/2144/files/70483855070.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8384/8093/files/6105955054.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1161/9491/files/benim_hocam_yaynlar_yds_yksdil_ykdil_video_ders_notlar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0212/5733/files/76118517008.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7922/8837/files/dekofunorutiwapemuwip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9315/5237/files/janet_jackson_anytime_anyplace.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5498/0505/files/nobim.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 2

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_off00005c7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C7E 5380 bytes
SHA-256: 4f0ad807667ea0e97ef63ad0feef81a7450d3fc3b083b64d29253f26c5371df1
font_01_sfnt_off00006eeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EEB 9888 bytes
SHA-256: a9a13857f1b83abc23982b3165174a32c28deb51185005a3a9fdfd33c58604d9

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