Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdb15d13f20cabb9…

MALICIOUS

PDF

41.1 KB Created: 2020-07-25 05:37:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fd6d7b249b85906c6ad3e14899b3c42c SHA-1: 448034d77f286ae2c6c25e8956aad5f8714ec820 SHA-256: fdb15d13f20cabb91cb0712a62710799897fda8b8df5b59aba3e4d036dc5d94d
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, suggests a lure related to a "Bg phonetic keyboard". The presence of a large number of external PDF links, many hosted on cdn.shopify.com, further supports the attack pattern of link farming for malicious redirection.

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=bg+phonetic+keyboard In PDF document text
    • http://files.lclutheran.org/uploads/1/3/2/8/132814791/jopevotozefil-fawozowujevo-turireg-dilap.pdfIn PDF document text
    • http://files.lionsmarkcontracting.com/uploads/1/3/2/6/132681728/lazotomo_sijosi_fatupa.pdfIn PDF document text
    • http://files.viewfromtheoutfield.com/uploads/1/3/1/8/131871462/dosojunajux.pdfIn PDF document text
    • http://files.bccnest.com/uploads/1/3/0/7/130739340/4486063.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/kusamusa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8893/5067/files/fikosudaxitopurivozevan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4829/6857/files/beguwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/kitevadigiju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6902/1089/files/janusedawidolifokawiseri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rojifibopi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9550/7622/files/24419753132.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8991/2218/files/pesoxaduse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7946/7170/files/82497658435.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1195/5098/files/vizepujidarawotutedagatib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1468/3813/files/49309755813.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5580/7640/files/govuza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5648/0935/files/rezavazoxubidojimos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4852/5206/files/jotizot.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_off0000624f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x624F 5268 bytes
SHA-256: eb19481407a0b3ca7d4dc4a147f23afb80353af95a47f8e3bcb87aefcdc19897
font_01_sfnt_off0000742b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x742B 10364 bytes
SHA-256: 232eb63f01cd71fcf9eb7e4babbdc4da983c9460a12a350d54133e4d3787f4f7

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