Malicious PDF — malware analysis report

Static analysis result for SHA-256 7993ae932791bede…

MALICIOUS

PDF

35.9 KB Created: 2020-08-01 18:53:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 86f9b20e957c87e13a93edd1b618e09b SHA-1: 385fa3768427d2896805ef5161c70ff40430ba28 SHA-256: 7993ae932791bede912ab398c48a663cc33d3da5e152bd106eab764def6f96b7
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service that is flagged as malicious. The document body text and embedded links suggest a lure for free content, likely a phishing or malware distribution attempt. The presence of a malicious redirector URL indicates an attempt to lead the user to a compromised or malicious site.

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=mechanics+of+materials+6th+edition+solution In PDF document text
    • http://files.detonchoenvironmental.com/uploads/1/3/0/7/130740087/kudikirekikakoz_vexabakow.pdfIn PDF document text
    • http://files.laurenswildliferescue.org/uploads/1/3/1/4/131453850/legofosu-xemeser-rivitibejapumos.pdfIn PDF document text
    • http://files.chetee.com/uploads/1/3/1/3/131381055/kegasanirufatoxemi.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/1/0435/6436/8021/files/2381247489.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4513/5260/files/fejodidurudenudekedufixe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8389/0850/files/15596846757.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5882/2296/files/wulebatusiperejomusi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2310/4160/files/97087496186.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0391/2098/files/netok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8267/0485/files/10893545930.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2313/0009/files/dusidewof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2590/7368/files/lanurek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2290/1663/files/sonic_says_memes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6980/8548/files/limevepebigidajawimefozi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5393/2966/files/kugusowokilazepigija.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_off00004dd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4DD3 5420 bytes
SHA-256: 46421789d260a849c6117e5d2577d6c6e82186f6ea0df0a5ffe2fe7cb36897cc
font_01_sfnt_off0000601f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x601F 10224 bytes
SHA-256: 6b6f10abed242dc3233500ccc284c322cdd0b364f268ea54c20277021a55adb7

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