Malicious PDF — malware analysis report

Static analysis result for SHA-256 88b09df3054733c2…

MALICIOUS

PDF

42.3 KB Created: 2020-08-09 08:52:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9e82be1035448b209a76591c2f9dadae SHA-1: 2178040c6e32eac9cccf8f76af018b554973c4d7 SHA-256: 88b09df3054733c2cbcbeb1725bcfa99c7241ff169d1d5adefa460afcb577376
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.ru) that is known to host malicious content. The heuristic firings indicate this is a link farm designed to lure users via SEO tactics, likely for phishing or malware distribution. The document body, though heavily obfuscated, contains URLs that align with this observed behavior.

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/pify?keyword=balanza+de+laboratorio+pdf In PDF document text
    • http://files.charisacctservices.com/uploads/1/3/1/6/131606758/caf2cc85aa266e.pdfIn PDF document text
    • http://gixoz.66tandem.com/uploads/1/3/1/1/131164250/selemet.pdfIn PDF document text
    • http://noloxiraf.thesheilingshetland.co.uk/uploads/1/3/1/3/131383791/pufimolaw.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/1/0431/4189/0208/files/sunudexekotavawu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/34419937671.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4389/8019/files/34344031617.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/babape.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6372/1637/files/kezaroveji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9322/1783/files/9884335300.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/98774508290.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9870/9918/files/46539969892.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0131/5491/files/tepovef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1104/6561/files/gojidusulifo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5180/3036/files/5920968258.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nubizasijimowedemo.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
🗂 Part of campaign: charisacctservices.com 5 samples

Related samples 3

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_off00006570.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6570 5096 bytes
SHA-256: a47528e39fb3009035915d0e8812e2aa69acc5048d8e4a5b0a087cbe46ee523a
font_01_sfnt_off000076d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76D1 11152 bytes
SHA-256: f2dd367bbcc07eac0f5791d80251bd47d8c9b752677b11ce6da8e6314dd477a6

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