Malicious PDF — malware analysis report

Static analysis result for SHA-256 88af22e0ee11c6ba…

MALICIOUS

PDF

45.2 KB Created: 2020-08-16 19:47:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9fe12be357fce3fcff36dc54e046c7cb SHA-1: 9bc085c58d447a8412f7e91761b6e5088464db20 SHA-256: 88af22e0ee11c6ba6555b88d7a58b57ab68c22f700fa9e71e31c9b0e07f78c2f
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that point to a redirector URL, identified as a malicious link farm and a lure for free downloads. The document body, though partially corrupted, contains text related to 'consolidation settlement calculation spreadsheet' and the redirector URL itself, suggesting a phishing or malware distribution attempt. The ML classifier strongly indicates maliciousness.

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.
  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=consolidation+settlement+calculation+spreadsheet In PDF document text
    • http://gixiko.zoetrodd.com/uploads/1/3/1/4/131409090/1700081.pdfIn PDF document text
    • http://saviweki.rmarkillie.com/uploads/1/3/0/7/130775506/kaluvamixer_nojitedasigoso.pdfIn PDF document text
    • http://files.missminnesota.org/uploads/1/3/2/6/132695258/paduluj_jozuwosolimivop.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/1/0438/4695/9261/files/1999_jeep_grand_cherokee_owners_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9139/2664/files/atomic_number_table_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9703/7730/files/mirimapabixabagab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7560/0535/files/10243149764.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8131/0114/files/vadefudiwokepem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4361/8965/files/python_import_module.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7699/3702/files/noperelob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0729/5140/files/brave_new_world_chapter_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8191/5804/files/strlen_in_c.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5159/7480/files/tozosap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3729/4754/files/lujuruzunegewewowafo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3335/3627/files/employment_contract_malaysia.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007303.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7303 5220 bytes
SHA-256: df70ecc3eaa4f100908365834531ebc598509856527391170f3e5fe7abc3cd2f
font_01_sfnt_off00008490.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8490 10136 bytes
SHA-256: 72d5ef3d2046b701041476f25b92f14026ebe37d36b186c6860dec9978977971