Malicious PDF — malware analysis report

Static analysis result for SHA-256 315e446943825548…

MALICIOUS

PDF

56.4 KB Created: 2020-08-31 03:59:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f70844bb5e2520c0033fa4d2b566d0b3 SHA-1: c58a3b763300a4db5d7d0073fa4c3ffcf0fa8e51 SHA-256: 315e4469438255482f6afbd2d0e20ee3ef282af07417afdcde89f3fda4554e2a
194 Risk Score

Malware Insights

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

The PDF was flagged as malicious by a machine learning classifier and contains a link to a known malicious redirector at `ttraff.ru`. This redirector is likely used to obscure the final destination, which could be a phishing page or a malware download. The document also contains a large number of links to PDFs hosted on Shopify, suggesting a link farm for SEO poisoning or traffic generation. No scripts were extracted, but the presence of the malicious redirector is a strong indicator of malicious intent.

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.ru/wix?keyword=kodak+printhead+loose+or+missing In 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/1/0459/9401/6935/files/10329954788.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8144/9118/files/49688462716.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1670/5432/files/free_android_antivirus_protection_app.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6322/1155/files/canada_airport_codes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/8061/7885/files/57599779973.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6331/1512/files/nowimuzizujowufasoxoru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0595/0626/files/viwiwogagazelitipagere.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0466/3951/3765/files/chasing_cars_lyrics_by_nasser.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/808d8c_b04ab988f3da486ebdb099865e1cae27.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/97493d_1020d8a704714d68a33ccb07cebb45a9.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/a2ebd8_724de835f3724cac90b6d5c3fa1dd9b8.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/49be48_406f3631bf00402183b91451a52cdb44.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_f937331da51648f0a8d23126ba60b336.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_off00008712.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8712 5408 bytes
SHA-256: fdbd70b6c05d99d5e29ada943e4eb2ce258df62b9d4a5845bb1ebfbaf339e5aa
font_01_sfnt_off0000994b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x994B 10968 bytes
SHA-256: e90606d1d2352ab522b49240eccc7e838dff38073d2a44e79812455b5da3e3e6
font_02_sfnt_off0000bee8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBEE8 16232 bytes
SHA-256: c2f1b8e27e4c5d1eb6694bcf999bed56489d599ed66a9b176e3ad865fa2ee921

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