Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb41ee44dfd65d14…

MALICIOUS

PDF

50.1 KB Created: 2020-08-11 23:37:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a64afe978ef48f875b8fa10edb00341a SHA-1: e7cf8a4aa74ac1172a184a5f185cae389ed8cf36 SHA-256: fb41ee44dfd65d14967c5f26d88766490992b4061075aedf1a48daaa8cf6446b
194 Risk Score

Malware Insights

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

The PDF file contains a high number of embedded links, many of which point to a link farm hosted on Shopify. One critical heuristic indicates that the PDF links to known malicious redirector infrastructure, specifically 'ttraff.cc'. The ML classifier also strongly flagged this PDF as malicious. The primary attack pattern involves luring users to click on these links, which likely lead to malicious payloads or phishing sites.

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.cc/pify?keyword=receptores+asociados+a+enzimas+pdf In PDF document text
    • http://files.coffeesonme.com/uploads/1/3/0/7/130775707/003ac250f8dc17.pdfIn PDF document text
    • http://vewijozot.hillsideumcgoffstown.org/uploads/1/3/2/3/132303072/3028775.pdfIn PDF document text
    • http://files.sassysproutnutrition.com/uploads/1/3/1/6/131607010/pokem-nogixaxadajas.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/1/0435/9002/5375/files/xejarozaduwonoxuziselego.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1965/6603/files/19958736657.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8693/0329/files/jogeburomolubixobed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1495/4918/files/tezepivetu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4952/5149/files/audacity_mac_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2482/6014/files/44485566753.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0360/8231/files/62108817763.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7973/7237/files/74780631468.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5395/6758/files/kojarexo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4061/3286/files/ridisisogikogemane.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/3038/4537/files/o_candomble_da_bahia_roger_bastide.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E6D 5324 bytes
SHA-256: 803f81b4c82b3995cf126915d88569ccb5c4bd806f89dad6b51e23fe92556e5b
font_01_sfnt_off00008078.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8078 11100 bytes
SHA-256: 0f0c24aff4cbf485203e9848626b1b793027bd1531db6553de460af6a6bb0124
font_02_sfnt_off0000a4f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA4F8 16112 bytes
SHA-256: 116e1aefc1bdc9fdbdc8bc4ca32ed8fc2a9096b6ae60b76e258fcc2d5524df3d

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