Malicious PDF — malware analysis report

Static analysis result for SHA-256 f503f70d5c427335…

MALICIOUS

PDF

37.3 KB Created: 2020-08-11 16:37:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 89eecc2e8dee33750bc802b1aef4d80e SHA-1: ce26a17f3ac395212f269a604d34b25ade011703 SHA-256: f503f70d5c4273354821796ed1460ae3f5f5de4c45691cc056ff77b097a3c6d1
202 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link to a known malicious redirector at ttraff.cc. The document body, though heavily obfuscated, contains text related to 'entresto patient assistance form pdf' and the wkhtmltopdf application, suggesting a lure to disguise the malicious links. The presence of a link farm and a malicious redirector indicates an attempt to lead the user to malicious content.

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.
  • 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.cc/pify?keyword=entresto+patient+assistance+form+pdf In PDF document text
    • http://memem.midwestcovers.com/uploads/1/3/0/8/130814328/gufakola.pdfIn PDF document text
    • http://poridupo.larkandleigh.com/uploads/1/3/2/6/132695471/255821.pdfIn PDF document text
    • http://files.freeoursexuality.com/uploads/1/3/0/8/130874143/budigonixawababibo.pdfIn PDF document text
    • http://files.aascapedesign.com/uploads/1/3/1/3/131381464/goludojit-kudanewaxo-xofigerulazofoj-fakekuxupalol.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/1/0428/6421/4182/files/elementary_statistics_bluman_7th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1928/0288/files/konexe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6858/8194/files/xoxaxivelefogezipuze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0346/2303/files/78172787709.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8282/3320/files/piper_comanche_service_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6873/5140/files/30410419079.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7049/6661/files/abdomen_agudo_quirurgico_obstructivo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7133/0717/files/26293036502.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/67862760002.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4790/2623/files/rixiretowiva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8068/6491/files/molar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6878/3773/files/xebali.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_off0000543e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x543E 5228 bytes
SHA-256: ffbd41d126cfc655fabaad906441c8ae0698f4ba6fb67477871d579aa7027b97
font_01_sfnt_off000065ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65ED 10156 bytes
SHA-256: 3e593856d546780671083b254c9fbb59b7b116e78d179e85ec956467c4cafe3b

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