Malicious PDF — malware analysis report

Static analysis result for SHA-256 b88b0b5df4e68438…

MALICIOUS

PDF

40.9 KB Created: 2020-08-12 08:37:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 98ceae6fa1cb6cc86445c3af589ec407 SHA-1: 995ecc7d314a84571b9082b12edf6350d74e885b SHA-256: b88b0b5df4e68438e522b5dee3c7590fa96f7a625155a3e2812636ff06788d1a
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, but one critical link redirects to a known malicious infrastructure at 'ttraff.ru'. The document body, though heavily obfuscated, contains the text 'Business plan sample for supermarket pdf', suggesting a lure to entice users to click the malicious link. The ML classifier also strongly indicated maliciousness.

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=business+plan+sample+for+supermarket+pdf In PDF document text
    • http://files.doaprowrestling.com/uploads/1/3/1/4/131438069/sipebetujarap.pdfIn PDF document text
    • http://files.ecigsuperstores.co.uk/uploads/1/3/0/7/130740165/wexipaw_dakebanosuxulak.pdfIn PDF document text
    • http://files.ontariochristianchoir.com/uploads/1/3/1/3/131380126/12d19829d0.pdfIn PDF document text
    • http://jagaka.antoniojuliolopezcastro.com/uploads/1/3/1/4/131453194/xodiba.pdfIn PDF document text
    • http://files.allangelschurch.org/uploads/1/3/0/8/130814466/nenemil.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/1/0440/5064/5157/files/kokefor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2149/2643/files/995703755.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7541/1872/files/alfabeto_italiano_per_stranieri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3298/4222/files/lojosalotefuwomed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9715/3943/files/66698220471.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4420/8797/files/56429753100.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1312/7835/files/sesojugaxumakegolibek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7179/8436/files/black_body_radiation_definition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1378/3199/files/warcraft_3_nocd_crack.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0767/1447/files/12798354043.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006144.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6144 5300 bytes
SHA-256: 020a6ae9ad50726478a356772a470d27813cdf6819a029a5ca4d2ed8b0fff1cc
font_01_sfnt_off0000732e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x732E 10424 bytes
SHA-256: 5a67e12be2146ea080505bc2cd3c8ac369ce704fbbd092d6b98770ad43b6c1e8

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