Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca1b6b3cba01db86…

MALICIOUS

PDF

44.9 KB Created: 2020-08-11 14:09:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c7c3eed5e107e71611f0c1fc4b194765 SHA-1: 7662748ec91e29f86916358280f2fd7c90df5863 SHA-256: ca1b6b3cba01db86fafab972338853490ff498af844fecc538695d3383a0faea
234 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links, https://ttraff.ru/pify?keyword=surah+yasin+pdf+malaysia, is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the intent is to redirect the user to malicious infrastructure. No scripts were extracted, limiting the analysis of direct execution capabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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/pify?keyword=surah+yasin+pdf+malaysia In PDF document text
    • http://dofevenew.iowaconcreteproductsandmonuments.com/uploads/1/3/0/9/130969868/d83b4b6da.pdfIn PDF document text
    • http://dujuv.expertrelationship.com/uploads/1/3/1/4/131437130/1018305.pdfIn PDF document text
    • http://files.goodharborpottery.com/uploads/1/3/1/3/131379860/zotox.pdfIn PDF document text
    • http://files.chednunez.com/uploads/1/3/1/3/131384335/risomejewujoveweb.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/1/0431/1754/3588/files/29614417215.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5757/8137/files/42268348700.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8640/5022/files/73627254283.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7326/4030/files/javascript_slide_bar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zetuvoveluganimuwejipas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4946/6526/files/sphax_resource_pack.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9812/9059/files/rewibejij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4707/3445/files/83171457883.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8307/1650/files/44158495488.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4963/2412/files/30188149976.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7335/5424/files/minecraft_fortune_enchantment.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4431/6070/files/penajubifinipifojekepa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4243/0362/files/aws_certified_solutions_architect_professional_dumps.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005946.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5946 5488 bytes
SHA-256: 29c8b395db6d73406139f26718b500493c556d4680905f822dcbb88a9f404d4c
font_01_sfnt_off00006bce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BCE 11676 bytes
SHA-256: 327eaf9801dbde94100feba2b009d983f6a159a5ff30e4f1fff5b46d736554a1
font_02_sfnt_off00009180.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9180 16132 bytes
SHA-256: 06d84a79787f49517cba9647d12dd77c675544b9e46e70dbd0c3ec2b8d2a160e