Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fdc1d67d04b62f0…

MALICIOUS

PDF

49.6 KB Created: 2020-08-08 17:49:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8602927e05bbc75e5bfff3275bccf567 SHA-1: 266fc42b9c44a8d4cc3c9c6a5de064c81241a8d2 SHA-256: 1fdc1d67d04b62f0248b67722c4632092857c40d28e7a5c3f54d71a80a4aba57
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify, designed to appear as legitimate resources. One of the primary links, however, redirects through 'ttraff.cc', a known malicious redirector, suggesting a phishing or malware distribution attempt. The document body, though heavily corrupted, contains text related to learning French and the tool used to generate the PDF, reinforcing the lure. The presence of multiple unknown URLs further supports the 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=livre+facile+pour+apprendre+le+fran%25C3%25A7ais+pdf In PDF document text
    • http://files.brightlikeblack.com/uploads/1/3/1/0/131070452/poveraxiw-pewalaru-tuduj.pdfIn PDF document text
    • http://files.daniellefontainekoslowsky.com/uploads/1/3/0/8/130873951/2836508.pdfIn PDF document text
    • http://files.novellychic.com/uploads/1/3/2/6/132695405/1b7055.pdfIn PDF document text
    • http://files.helenaakashi.com/uploads/1/3/1/1/131163615/344158.pdfIn PDF document text
    • http://files.msdemers4thgrade.com/uploads/1/3/1/3/131384679/xokuze.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/1/0437/1637/8773/files/list_of_inventions_and_discoveries_in_science.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4357/7256/files/guxiju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7270/1095/files/couper_un_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2331/9715/files/68725166861.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7041/3207/files/7095513631.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/8003629611.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4166/6710/files/domowaxutifitugosazor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0127/3750/files/16520729803.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6766/0706/files/zijuvedesedirotelawomoka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4517/5971/files/ritenuxan.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000069c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69C8 5332 bytes
SHA-256: 9ea4a0e01a5a87409e0a1722ec61e3b1bc1640defb87e6020e109f016a419027
font_01_sfnt_off00007bc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BC7 11848 bytes
SHA-256: 21411734410906304caaa76d174e4ad46e3d3aa97087b2936af03954a964c063
font_02_sfnt_off0000a185.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA185 16204 bytes
SHA-256: a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd