Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2aa20ccd38b5c7a…

MALICIOUS

PDF

50.1 KB Created: 2020-08-18 13:27:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c7c3488294508150bd6e1abe01234890 SHA-1: b9a2e55b4e140dcec6ed4b9ed39592180c86a699 SHA-256: a2aa20ccd38b5c7a93aceb374baadb84cbcf31cca2d64c890893e5116cf34bdd
210 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK pointing to 'ttraff.ru'. Another critical heuristic, PDF_SEO_LINK_FARM, indicates a large number of external links, with the primary example being a PDF hosted on Shopify. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=blogspot+template+simple', suggesting a lure related to blog templates. The presence of urgency and download button lures further supports a malicious intent to trick users into clicking the links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=blogspot+template+simple In PDF document text
    • http://futabepid.ninetyfiveandbeyond.com/uploads/1/3/0/7/130776208/nuzer-nedodesapif-rabavumewab.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/1/0429/5698/0377/files/jevuteparazoserajovopes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1615/1455/files/88740528902.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0433/8077/files/jokemomivivapezetofu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8828/8670/files/accounts_payable_interview_questions_and_answers_for_job.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5491/5993/files/xigutipafobebenelut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5341/5576/files/78344864022.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5173/5448/files/bulizusufob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2804/6233/files/borowasex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1897/6414/files/petuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1979/6643/files/chrysler_300_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7404/4579/files/29770116891.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007bf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BF1 5092 bytes
SHA-256: 49dbf84776dab8f00d839efba55d140565b289195343d8a8b7b9db63849ad60d
font_01_sfnt_off00008d34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D34 2268 bytes
SHA-256: 87560c96094722e0b06e960fc6e6e0982e5dd9a45b3b8c8ce6a725bc3f373f32
font_02_sfnt_off00009746.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9746 10500 bytes
SHA-256: 01d8493dae3d1ed4af57e70beef82423ae226bdfca29c6ca2e722d367369f734

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