Malicious PDF — malware analysis report

Static analysis result for SHA-256 443fc18e3c0bc207…

MALICIOUS

PDF

44.8 KB Created: 2020-10-06 17:47:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 62d18ad8a5d1f84842487b3e48cc99f8 SHA-1: 860f5b5cf55fa17d5f0392583d855e110ceb01f2 SHA-256: 443fc18e3c0bc20735287fecc3f54344d9d4b007784c8b7861403918566bf34e
254 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains a large number of external links, many pointing to SEO-optimized PDF files, and a critical heuristic firing for a malicious redirector. The document body mentions 'Poe uniques list' and 'PoE Heist', suggesting a lure related to the game Path of Exile, likely to trick users into visiting the malicious redirector. The presence of numerous phone numbers in the document body also indicates a potential phone scam component.

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.
  • Travel-support phone-number stuffing scam critical SE_TRAVEL_SUPPORT_PHONE_SCAM
    Document repeats phone numbers in airline/travel/refund/support language, often across multiple regional phrasings. This matches SEO/support-scam PDFs that impersonate airlines or travel brands and route users to attacker-controlled call centers rather than a normal travel document.
  • 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://cctraff.ru/strik?keyword=poe+uniques+list In PDF document text
    • http://fupew.800logiccor.com/uploads/1/3/0/7/130740496/3837641.pdfIn PDF document text
    • http://files.woofloo.com/uploads/1/3/1/3/131383743/e82bff4ade1c3.pdfIn PDF document text
    • http://files.cometcivic.com/uploads/1/3/1/1/131163669/gidawogiwupubotekeso.pdfIn PDF document text
    • http://files.aspectsmediaimaging.com/uploads/1/3/1/4/131453633/xeladipasefeku.pdfIn PDF document text
    • http://zojuj.randdtransportation.com/uploads/1/3/1/6/131606168/zaxekisavujisit_vudajiripov_naremafuvoke_rufuletaduse.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000745c.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000745c.bin)
    • https://uploads.strikinglycdn.com/files/0459d7d6-3c98-48ad-9708-27937548a2f1/kizolixazizezukuwimizor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fbe5f95f-964c-4481-9425-f4dba1b02edc/woxewalapu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19dd48d5-9937-4e13-9e1c-19d1eaa1f659/kifusaxenofuv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8d93008-ae19-40eb-a4fc-115a458edca8/sekekutubeniwot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/6706/7554/files/comic_relief_definition_synonym.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1067/9203/files/80415883797.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/1766/9278/files/53014919932.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9836/5340/files/30492596299.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/5553/7064/files/blue_whales_near_extinction.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8716/7649/files/noun_clause_worksheet_8th_grade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5412/0606/files/unblocked_games_99_run_3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9581/7382/files/61437539349.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6365/4040/files/lidinelijiloralizege.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf92917a-ff5a-4c3d-93c5-bd49690ca2d7/mazakijironavo.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 extracted file (font_00_sfnt_off0000745c.bin)

Related samples 4

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_off0000745c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x745C 4500 bytes
SHA-256: 94aeb3e11460c8f743315035e23b60af5c486a2a9e4fee7bf27771aaa92e65f8
font_01_sfnt_off000083c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83C8 10048 bytes
SHA-256: 006524d1380011cd368228f18abf8addf71b637c39730fb4d5e865bed4559604

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