Malicious PDF — malware analysis report

Static analysis result for SHA-256 91c2ed6ea42b5a0c…

MALICIOUS

PDF

51.4 KB Created: 2020-08-02 16:13:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ed964e9668daf68299f54e408b8d17ff SHA-1: 5f0caeacf3c126c86a26cad2728d2092d3d12bc0 SHA-256: 91c2ed6ea42b5a0c2352b38b43a0c4910bdac834ae664fae5c283ab672fd7c64
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically pointing to a URL designed to trick users into downloading "excel for mac". The document body, though heavily obfuscated, contains the same lure. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm designed to distribute malicious content. The primary malicious URL identified is https://ttraff.cc/pify?keyword=excel+download+for+mac.

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=excel+download+for+mac In PDF document text
    • http://files.ljsmithart.com/uploads/1/3/1/4/131408209/864b67c.pdfIn PDF document text
    • http://files.damageincfightteam.com/uploads/1/3/0/9/130969507/993f4c99a83a.pdfIn PDF document text
    • http://xowamo.wtctiles.com/uploads/1/3/2/6/132681443/piwasizas-xuxizabe.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/1/0430/8231/7975/files/my_suju_com.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4185/7448/files/33399867551.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6795/7658/files/zodijexedoro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3861/3415/files/kopitiresudiwaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7408/5279/files/94549472467.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5279/2982/files/gomowozubage.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6308/3162/files/ronaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4923/8178/files/84181026526.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9526/1348/files/91089649225.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8761/8463/files/zewik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8421/0583/files/tafefafodatipu.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 1

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_off00007e95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E95 4764 bytes
SHA-256: 27e1baa75fad7bb3a06f84f28d24be82c71943666e2eadd270fc5b089dc0a7b3
font_01_sfnt_off00008eaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EAF 10420 bytes
SHA-256: 886e59a076e017ba4cb23c4840fead639c16b694f2a50a73e675d46b1b6cf1d5
font_02_sfnt_off0000b25b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB25B 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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