Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbd2665bda9cd13c…

MALICIOUS

PDF

47.1 KB Created: 2020-08-19 23:16:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d414878eee66c8dcd0591fd1d60cc9ab SHA-1: b6bc1f3057c4d62b63b4c8dd3817f0a47477b0be SHA-256: fbd2665bda9cd13cdf0104799687a77e3c1272f51882ed0d81b7a8a70ea57273
194 Risk Score

Malware Insights

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

The PDF was flagged as malicious due to a critical heuristic identifying it as a redirector link to known malicious infrastructure. Additionally, it contains a link farm with numerous external PDF links, many hosted on Shopify. The document body contains the URL https://ttraff.com/pify?keyword=barbituricos+definicion+pdf, which is the primary indicator of malicious intent. The ML classifier also strongly indicated maliciousness.

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=barbituricos+definicion+pdf In PDF document text
    • http://lilunij.gallerylucid.com/uploads/1/3/1/8/131856919/539316.pdfIn PDF document text
    • http://files.mountzionpbchurch.org/uploads/1/3/1/6/131607093/2087433.pdfIn PDF document text
    • http://mikexot.englishlutheran.org/uploads/1/3/0/8/130874524/2436782.pdfIn PDF document text
    • http://xenub.getmgetm.com/uploads/1/3/1/0/131070469/2526233.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/1/0433/6245/1611/files/73391744110.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2992/8863/files/gozifotefefikaxedapeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9800/3874/files/lelonoturusalesariporamu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2137/6410/files/92583135703.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6821/8780/files/living_donor_kidney_transplant_guidelines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6495/8879/files/chambal_ki_kasam_film_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/metformin_er_gastric_1000mg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7321/6411/files/36795582855.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8652/8164/files/pavlov_media_sign_up.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3898/8709/files/23271022838.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 4

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_off000078c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78C9 5308 bytes
SHA-256: 204087b55f60cdc952d9896918aa0f9640823ff449c2b5473aa4bbc2e41281c2
font_01_sfnt_off00008ad7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AD7 11152 bytes
SHA-256: 63110db87beef2c5ac03027f9e09a6e16faeb811872bbed18694fbf74798779e

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