Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe170ca849efd9a4…

MALICIOUS

PDF

117.8 KB Created: 2020-08-01 19:13:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 63b26df0679e9d78898770767e7c2f9b SHA-1: 3560ae036fe268e9682d17e04f0919e1929c5c85 SHA-256: fe170ca849efd9a49711f915c926b87f3608349b03415a4a12d9cd7438c64ffd
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains a link that redirects to malicious infrastructure, disguised as a 'Doro phone manual'. This is further supported by heuristics indicating a malicious redirector link and a link farm designed for SEO manipulation. The document body, though heavily obfuscated, contains the malicious URL and other benign-looking PDF links, likely to blend in. The primary intent appears to be directing users to a malicious site via a deceptive lure.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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=doro+phone+manual In PDF document text
    • http://files.wiltshire-epc.co.uk/uploads/1/3/1/3/131379496/ab4adb8b4ad.pdfIn PDF document text
    • http://files.smokefreeottawa.com/uploads/1/3/2/7/132712326/415019.pdfIn PDF document text
    • http://files.cristinacaruana.com/uploads/1/3/1/0/131069886/c9642871239.pdfIn PDF document text
    • http://files.jaimerosenstein.com/uploads/1/3/0/9/130969985/5de9df685820.pdfIn PDF document text
    • http://files.marinasouthpiermural2015.com/uploads/1/3/2/6/132681409/modek-kusakejene-tepopar.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/1/0432/6601/5400/files/10567560091.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8999/3635/files/psychology_eighth_edition_david_g_myers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7300/3939/files/megakurid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6389/2376/files/76343293233.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1221/1359/files/feduxex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9236/9823/files/73372842874.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0900/0103/files/52944171999.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7058/7029/files/ranilixixeboliwogoje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nepel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7926/1590/files/rulodifobaregibibijos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6224/7067/files/xugawefifef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4138/0762/files/zepunutat.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00019358.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19358 4880 bytes
SHA-256: af7a0d8a9a6b2d011a840492212ef4c839c40923e06a66ef2c47dbecb6668ae6
font_01_sfnt_off0001a3c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A3C5 11232 bytes
SHA-256: dac932c786b14af60a42fbccc471b490b4eee5602d1e798bfc68571d6ad8b451