Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc23166dc22c0bce…

MALICIOUS

PDF

38.6 KB Created: 2020-08-05 16:26:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 460a5e5c76ca203e46aa2b690d06747a SHA-1: 5156a8f1d42c8f5c0d52f0d67904fe5b9048e0e5 SHA-256: bc23166dc22c0bceb512f4d258fc2690503d240e46093b1f96b2ecf12378ed27
194 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, characteristic of a link farm. One of these links, 'https://ttraff.com/pify?keyword=trastorno+de+angustia+sin+agorafobia+pdf', is known to redirect to malicious infrastructure. The document body itself is largely unreadable binary data, but the presence of the malicious redirector and the link farm strongly suggest a phishing or malware distribution attempt.

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.com/pify?keyword=trastorno+de+angustia+sin+agorafobia+pdf In PDF document text
    • http://files.ososoaps.com/uploads/1/3/2/6/132695306/dinuvepuvore.pdfIn PDF document text
    • http://files.jlongkandb.co.uk/uploads/1/3/1/6/131606368/da1337258866eff.pdfIn PDF document text
    • http://files.newhorizoncounselingctr.com/uploads/1/3/0/8/130813804/58c8de6a2.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/1/0433/0687/7080/files/pigirerunozekolufis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5759/4011/files/bovozivawekiki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2155/7147/files/nabemonanobawusizuvakoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3152/6557/files/zezijal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8688/9639/files/xoxuzamemizabewusidinuwab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4919/5419/files/warlock_spell_list_5e.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5638/9528/files/60561555297.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8769/9876/files/39562977234.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3784/9762/files/bozidabamajokif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0688/6051/files/satisugatelowo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3057/6278/files/goduvubotu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1982/8386/files/kojojefolepidopuke.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_off00005a6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A6C 5268 bytes
SHA-256: 00b387eb6f6beb0ddbe4bcc6cc8017777530c7d7b2749f31ab30b1641177ff72
font_01_sfnt_off00006c59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C59 9712 bytes
SHA-256: 98c4e0e24090a329c24d241fc18e6619ce422c53995b8aa768a0f66b0c9d12d9

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