Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f290b45e641cfb0…

MALICIOUS

PDF

55.7 KB Created: 2020-08-13 16:49:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2409591937f560f80c000682663a8d90 SHA-1: a609034459690b8e7aa68e02b66a90663418fb79 SHA-256: 2f290b45e641cfb0020c43bd96e9d7fbdb1f181bdf1d76d22d430077952cc88d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=black+boy+richard+wright+pdf+download'. Additionally, a PDF SEO link farm heuristic indicates the document is designed to host numerous external links. The ML classifier strongly flagged this PDF as malicious. The document body contains the malicious URL, reinforcing the lure.

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=black+boy+richard+wright+pdf+download In PDF document text
    • http://pexej.abda-hawaii.com/uploads/1/3/1/3/131383483/rezokogadit_kinedixiku_rilek.pdfIn PDF document text
    • http://files.moncadamedia.com/uploads/1/3/2/7/132740439/rimefa_sirezegobu_ratereb_muxatavolos.pdfIn PDF document text
    • http://files.rockport-pewter.com/uploads/1/3/2/6/132682124/bojaxoz_ronopibipil.pdfIn PDF document text
    • http://files.didsburyjuniors.com/uploads/1/3/2/6/132681824/maxipupamekep.pdfIn PDF document text
    • http://files.discountinsulation.net/uploads/1/3/0/8/130874510/e7e7e7d90433.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/1/0429/4469/2383/files/nasigumifej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8073/6156/files/wavabulitewuvomegefot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8072/1311/files/2012_jeep_liberty_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6377/1293/files/atonia_uterina_gpc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9765/1352/files/44508025440.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5434/2042/files/amd-_action_downloadproduct_sp.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/pimadupegobat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5915/8940/files/96499136367.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5030/2616/files/petaleg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0496/8603/files/morujemiku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4430/5056/files/beginner_english_vocabulary_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5964/1496/files/77635985140.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nalekubaserigudopen.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000815e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x815E 5684 bytes
SHA-256: cbfd6800ccf0194176ee6e586ffd49a6ee191cfc720a669f4b25837eba02f8cb
font_01_sfnt_off000094c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94C4 10576 bytes
SHA-256: 15ed8c748f9be657511f824d12df957964d9c045d99ad0a60b3128af3c5a5c1d
font_02_sfnt_off0000b8ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8EF 16960 bytes
SHA-256: c5c771654bc46550774260eca6f1420066df7cff82da6203b49210e97779b650