Malicious PDF — malware analysis report

Static analysis result for SHA-256 43fbf61ae88794ed…

MALICIOUS

PDF

44.9 KB Created: 2020-08-25 12:10:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cc81509338283e2a8c8ba2ddb09a45ad SHA-1: 5d8256dea008969216ba150d44363c8fbeed1390 SHA-256: 43fbf61ae88794ed0d2eae4ca2dec90197b39b394bfce2165f771fa41243ee80
194 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at ttraff.com. This suggests a lure to a malicious site, likely for phishing or malware distribution. The ML classifier strongly supports the malicious nature of this PDF. No scripts were extracted from this sample.

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=business+canvas+template+excel In PDF document text
    • http://files.anthonypiovesan.com/uploads/1/3/1/4/131453847/sajixijiboso.pdfIn PDF document text
    • http://files.ninja-te.ch/uploads/1/3/1/6/131606397/dibopasajowi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4216/1319/files/celestial_sphere_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1090/6518/files/kenisolawu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1583/0695/files/76750466234.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6263/9269/files/intermediate_accounting_6th_edition_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7982/6589/files/learn_russian_books_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3683/4981/files/51006491023.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4275/0114/files/bearing_damage_and_failure_analysis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1572/4456/files/56615424099.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4690/3709/files/bohemian_rhapsody_piano_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4666/6389/files/centrifuge_diagram.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5013/9801/files/41232286745.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9825/1170/files/media_player_classic_codec_pack_apk.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006537.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6537 4932 bytes
SHA-256: 452ac789a1a81ad523bdee65f1b8b29b3f5ac8a8cfd215d7a06671d688fc0c03
font_01_sfnt_off000075e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75E8 10048 bytes
SHA-256: 3fc029b2ee7e252e85a89fe8a5655d0bf781f4c65868102d97adeaa2f0b4c950
font_02_sfnt_off0000984c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x984C 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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