Malicious PDF — malware analysis report

Static analysis result for SHA-256 c27fed1ebd80e16c…

MALICIOUS

PDF

40.7 KB Created: 2020-08-24 11:50:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6e844c67b92c963c6949dbae98be0a93 SHA-1: 591f8e08850112f13cc4a44192faa632428c84c2 SHA-256: c27fed1ebd80e16c65ad507d05ec18f4df510d0ac990cc7edceb55eacb14c802
222 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'Hollywood reporter subscription renewal' and a date, suggesting a lure. The presence of a link farm heuristic further supports the malicious intent of distributing links to external content. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to a phishing or malware delivery site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=hollywood+reporter+subscription+renewal In PDF document text
    • http://files.jpzproducts.com/uploads/1/3/2/7/132740756/1572764.pdfIn PDF document text
    • http://files.travelwithjean.com/uploads/1/3/0/7/130739906/gefifewitatid.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/1/0434/6449/1174/files/broadsheet_port_melbourne_breakfast.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2807/7992/files/podonefuzuzidedojomapeguw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1104/6561/files/gojidusulifo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5702/9024/files/report_echeance_pret_immobilier_caisse_d_epargne.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8222/7617/files/xunoje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7618/2426/files/rezilitesabokobegepun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3476/2654/files/razunubuxulutobes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5254/5701/files/introduction_to_contrastive_analysis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2596/4949/files/votovukinopadovatuvo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5693/1751/files/jizepijimibisogogufo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6845/6086/files/3557930580.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/jatigodarogulezu.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_off00005ec0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EC0 5364 bytes
SHA-256: 778a05c8345fc2e1f255a0468ff8669536da18725b66666f6410bc3f8e248231
font_01_sfnt_off00007113.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7113 10804 bytes
SHA-256: acb4d352b8f9122390fd68c6a28d058e9a4f2e997b24ef2eeb6385d22795226d