Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3ae785d2b19df42…

MALICIOUS

PDF

36.3 KB Created: 2020-08-02 02:01:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8a2b6884cb784ad0b39d16581eb11ac9 SHA-1: c926caab1bdc6fa57a6b63bd06361617c29cd290 SHA-256: c3ae785d2b19df421f808f52b88f69605509031c2f6e7adc31e144d9ea2d4fbb
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains, including a known malicious redirector. The primary malicious link is `https://ttraff.cc/pify?keyword=ash+like+snow`, which is designed to redirect users to further malicious content. The document body, though heavily obfuscated, also contains this URL, indicating an attempt to lure users to malicious websites.

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=ash+like+snow In PDF document text
    • http://files.wistorian.com/uploads/1/3/1/6/131637631/jotuxunafex-fuvilasavi.pdfIn PDF document text
    • http://files.advancedanaerobics.com/uploads/1/3/0/9/130969555/davam.pdfIn PDF document text
    • http://files.hsexquisitecloset.com/uploads/1/3/1/4/131438056/60c35a4b9def0.pdfIn PDF document text
    • http://files.bigt-farms.com/uploads/1/3/1/6/131606035/f6835af.pdfIn PDF document text
    • http://files.jaxaerospace.com/uploads/1/3/1/0/131070523/zopagu_seniduzadinogu_fawewunum.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/1/0428/9432/7961/files/lutotapowunewuxagimirifim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8609/4248/files/59153584802.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5970/8058/files/zafexojokunarife.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3519/6566/files/61628447022.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4617/4877/files/38520491737.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6998/9279/files/75160449506.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7180/7391/files/fovumejakebopew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fufalelavajukunegaxiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7264/3491/files/pirineriwisuxamedoji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7318/3643/files/juxefevokezazumenomevifog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3744/8609/files/5878570962.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 8

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_off00005202.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5202 4612 bytes
SHA-256: f4f33bffff555021726026da52b60b6084be0a780085088ae64009641abf8da0
font_01_sfnt_off000061c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61C4 10320 bytes
SHA-256: 6592fb43296cfe8bd7d5481aea477f8a9d18642f0d31468b6c03d34f9ea7c58f

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