Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3b3a159de167482…

MALICIOUS

PDF

47.1 KB Created: 2020-08-23 01:32:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4db098896246b25f75f1d47b86984121 SHA-1: 006354b80a51265a50de5a23fca6e4c322fd62a0 SHA-256: a3b3a159de16748257f8e39f895c1c39d9bb3334c25d1f7687d911a5d3354167
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body and embedded URLs suggest a lure related to an 'inventory count sheet' to entice users to click the malicious link. The PDF_SEO_LINK_FARM heuristic indicates the document is part of a larger scheme to generate traffic through numerous external links.

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=inventory+count+sheet+meaning In PDF document text
    • http://files.jimmydazecomics.com/uploads/1/3/1/3/131379434/ad4418c2c0d.pdfIn PDF document text
    • http://files.jessicamixon.com/uploads/1/3/1/4/131438567/5333b54267ffa.pdfIn PDF document text
    • http://files.torchpub.com/uploads/1/3/1/4/131406068/9882094.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/1/0435/3284/5207/files/ordering_fractions_from_least_to_greatest_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4300/4322/files/isaac_babel_red_cavalry.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9531/6896/files/module_8_basic_aerodynamics_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7152/7325/files/24615794412.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0537/0787/files/zalibidugiritabevodesasiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8863/2213/files/is_it_worth_having_a_vpn.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0101/1614/files/mikazusuxika.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/4944/3482/files/zizuzoru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5576/6942/files/46201900741.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0675/3948/files/zuvelebefavikamif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1024/2198/files/35768049924.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 6

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_off00007a07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A07 5280 bytes
SHA-256: ce0e1f2eade31fb741cada9ecf292a1191375d3fd7be09450e6569baf66a81d1
font_01_sfnt_off00008bda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BDA 10488 bytes
SHA-256: db5034ebcd04327898d041338b104bab5ac7981c43b354cf62d4e11a8de85bfc

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