Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a13360aac19da56…

MALICIOUS

PDF

47.3 KB Created: 2020-08-04 19:35:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7c2f8cc82000740f1ee855cd53696e3c SHA-1: be686217f90d36a935c7bc86e2e6398920865760 SHA-256: 2a13360aac19da56dfa32211030bac9ed8d24f2af90ccf40e932826db7f76b9f
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is used to obscure the final destination. The document body, though heavily obfuscated, contains the URL that is likely used in the lure. The primary attack pattern involves redirecting the user to malicious infrastructure.

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=file+compress+online+pdf In PDF document text
    • http://files.kielycup.com/uploads/1/3/1/6/131606060/2328ba536b1.pdfIn PDF document text
    • http://files.thewanderers.org.au/uploads/1/3/0/7/130739758/22797f3e59.pdfIn PDF document text
    • http://files.westfielddentalpa.com/uploads/1/3/0/7/130775942/bavef_kezujuwusuk_javexolizepun.pdfIn PDF document text
    • http://files.fernandanavarro.net/uploads/1/3/1/6/131607407/katasixogap_zukoworu_tipotewazo_rirezuzazogef.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3178/1791/files/6309169181.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2030/3011/files/navso_p-_3013-_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2412/9946/files/29991711616.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0835/2679/files/satozogotejekanifopitov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6170/5888/files/wugesenizuxafumalezuvu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4357/7246/files/.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1769/9477/files/deromuxukaxuga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xigazisamakolomomabixefox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9359/9132/files/python_create_folder.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3617/1688/files/amsco_apush_2020_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1102/2756/files/51631133023.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 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_off00006c90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C90 4752 bytes
SHA-256: e3cac45d3ba2a87fd178ee394c075f0e26d643058d90ede9b168b3fbdc48e39b
font_01_sfnt_off00007c87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C87 11568 bytes
SHA-256: 0b682713c46cd0e7792288fe258d394c6009fd88f870daa18fbe12071cb677ec
font_02_sfnt_off0000a25f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA25F 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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