Malicious PDF — malware analysis report

Static analysis result for SHA-256 549ea4db2ed80876…

MALICIOUS

PDF

40.2 KB Created: 2020-08-24 07:39:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e78099e3ca907fd1de2a43189d5905d2 SHA-1: 6998ea99b4242076e17d9d66497a35478ba157f8 SHA-256: 549ea4db2ed8087603422ee50878d2b5b851f31d988b13dd6751f794ab37b1de
194 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though partially corrupted, suggests a lure related to a 'request for quotation template sample'. The PDF also contains a large number of external links, many hosted on Shopify, which is flagged by the PDF_SEO_LINK_FARM heuristic. The ML classifier also strongly indicated maliciousness.

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=request+for+quotation+template+sample In PDF document text
    • http://files.mcbaronfootball.com/uploads/1/3/2/3/132302735/zewosozofosazi.pdfIn PDF document text
    • http://files.markjago.net/uploads/1/3/0/7/130776183/1602856.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/1/0427/5575/2103/files/zifijilirejaxepitowez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9507/2672/files/answering_bell_meaning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5091/7269/files/97245543830.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4433/8838/files/besamanim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7079/9510/files/mepiwibeguzu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9372/1255/files/3d_sky_bedsheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1448/7190/files/65067030520.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3828/5725/files/75522077490.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2650/5128/files/kegodomotur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0519/0041/files/customer_value_in_supply_chain_management.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nisexabidubukov.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_off000060d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60D7 5180 bytes
SHA-256: ea3e7940f05022215217815c9a661440004318c05302be10b13744bfe714abe7
font_01_sfnt_off00007269.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7269 10016 bytes
SHA-256: 52c4280f68aba5fea307e658c6d730067acf49c589895c9274fa8fda649ec2cc

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