Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa808532586e4540…

MALICIOUS

PDF

46.1 KB Created: 2020-08-18 19:41:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5ecf6f7091c1589ee31d07c5ccdb183d SHA-1: acdaa546c769afb6067e6bbe6c1d7dde8b8d3676 SHA-256: aa808532586e454072efbd23d13163372d40754158f914f57aa0ea0fc5d03d4f
202 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing for PDF_SEO_LINK_FARM indicating a link farm. One of these links, ttraff.ru, is flagged as a malicious redirector. The document body also contains a call-to-action phrase, suggesting a lure to encourage user interaction with the malicious links. No scripts were extracted from this sample.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=commendable+work+performance In PDF document text
    • http://files.matterbotattica.com/uploads/1/3/2/6/132681901/c586d0a7.pdfIn PDF document text
    • http://jifebuguk.widhalmcustomhomes.com/uploads/1/3/0/8/130813988/febugidetagizo_nowow_mewopigatedidob_wopuxan.pdfIn PDF document text
    • http://sarijo.jericosoundsystems.com/uploads/1/3/0/9/130969332/7231214.pdfIn PDF document text
    • http://files.businessbcs.com/uploads/1/3/2/7/132740343/e9c81eaa854.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/1/0431/9975/8497/files/vagori.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1367/5930/files/juvapod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7659/1509/files/ashrae_standards_62._1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0576/2974/files/kadaxuzana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3623/5160/files/tasesopiforujudasapu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2707/1130/files/javubasowajixoro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4782/8133/files/nebesuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2147/4714/files/siwiwagutodolitedatafi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0256/8599/files/blacksmith_workshop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7711/5812/files/20500222040.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5153/2963/files/general_affidavit_form_missouri.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_off000076a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76A6 5324 bytes
SHA-256: 4a5cfa522d106868325ab9ca181abebdf7664a7a1a5b46700aae16d6a96b5028
font_01_sfnt_off000088ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88BA 10220 bytes
SHA-256: 3289153d2a5513cbaff003d0807e0c7bda05a919b160ef4fc78a9e78d226fbbd

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