Malicious PDF — malware analysis report

Static analysis result for SHA-256 365fa845b691ea04…

MALICIOUS

PDF

44.2 KB Created: 2020-08-03 06:05:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4dc33d07a409bb15d50b6ed80765d816 SHA-1: c70b6b58e172f4db39bacc350218bda4a51e67ce SHA-256: 365fa845b691ea047064f242d69190c187374d340a97d5d1cd0117dac04519a1
194 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.cc/wb?keyword=one%20page%20pdf%20file%20download`. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The presence of a PDF link farm further supports the malicious intent, likely for SEO poisoning or traffic generation. No scripts were extracted, and the document body is heavily obfuscated, but the embedded URLs and heuristics strongly suggest a phishing or redirection attack.

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.cc/wb?keyword=one%20page%20pdf%20file%20download In PDF document text
    • http://files.nocofoodincubator.com/uploads/1/3/2/7/132741081/1256216.pdfIn PDF document text
    • http://files.ericbrittmusic.com/uploads/1/3/1/4/131407635/jemep_lojenuruteme.pdfIn PDF document text
    • http://files.chrisbirdsnthings.com/uploads/1/3/0/7/130740589/9b57e.pdfIn PDF document text
    • http://files.ncfranklincodemocraticparty.com/uploads/1/3/1/6/131607010/9779269.pdfIn PDF document text
    • http://files.vistenputnam.com/uploads/1/3/0/7/130775825/b18c04cb79.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1960/7965/files/vedavamegawizuzaronin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7087/1970/files/best_automatic_toilet_bowl_cleaner_consumer_reports.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7786/0516/files/lepobadobotife.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7209/2315/files/xadifoziloroturawukon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6152/6166/files/2188084648.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6277/2380/files/difegaxifogamog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2116/3941/files/the_buddha_2010.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7351/2359/files/35865202784.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7373/2768/files/wosevidajasopumewuzosovex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2819/3184/files/jisebow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/resozelofik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/88490435411.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0196/0854/files/29128568740.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9572/8029/files/suvinorek.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000639f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x639F 4764 bytes
SHA-256: 45bc8665fa7689c5b4e3353b17bccd8a2da5cbbc9e8795fe439dcd005c37aa91
font_01_sfnt_off000073ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73EE 9852 bytes
SHA-256: b8863a1ac10526d730ad73c2b3db902713f63514c78bb2695b3d95a36c3b9f84
font_02_sfnt_off0000959c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x959C 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71