Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2310097d83dec30…

MALICIOUS

PDF

44.5 KB Created: 2020-08-16 20:21:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ef8e12f3b0035aed078c5b08c0bec763 SHA-1: 0512dc01bf04c5c61c8234e958698836976d2237 SHA-256: f2310097d83dec309a79e67acd8e1eab6810f7c46acebe94f6157197604c7b66
234 Risk Score

Malware Insights

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

The PDF file contains a link to a redirector URL, which is a common tactic for phishing and malware distribution. The document body, though heavily obfuscated, contains text referencing 'Yahoo messenger conversation history' and the redirector URL, suggesting a lure. The presence of a 'Password-protected archive handoff' heuristic indicates the document may be intended to trick the user into downloading an encrypted payload. The file also contains a link farm pointing to multiple PDFs hosted on Shopify, with one specific PDF identified as a potential target.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=yahoo+messenger+conversation+history In PDF document text
    • http://sokemera.parkcitybrewery.com/uploads/1/3/1/4/131437987/043612ac3.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/1/0437/0399/2474/files/14548775260.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9823/4270/files/88620792826.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/3012/2393/files/mopaku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9952/9120/files/comment_regrouper_plusieurs_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1646/1211/files/39126497753.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4418/3974/files/30175151237.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/0479/9639/files/gosuzikajidiganavofa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5660/4070/files/lanenaxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4253/7629/files/causes_and_effects_of_overpopulation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7192/1571/files/66850648851.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4614/2114/files/46201024198.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4119/3110/files/bmw_r1200rt_service_manual.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006522.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6522 5304 bytes
SHA-256: fbe43cf15bccb8d8c4c04ec26084be4ce1cf3a48923b9fa32b004bd442401532
font_01_sfnt_off00007711.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7711 1936 bytes
SHA-256: a8ba320a0ac8a73a5a8cc2c47ba30bd151ec5f51af4d5ac0b9daf85eaa8f1301
font_02_sfnt_off00008056.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8056 10728 bytes
SHA-256: 58570abb36a167dd6ff6bb27fd035fa1e17a0e8391795533cd5c90638c1c737b

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