Malicious PDF — malware analysis report

Static analysis result for SHA-256 345facbffa34de1b…

MALICIOUS

PDF

45.8 KB Created: 2020-08-11 06:03:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f9feb53cf95735dd374c289dc8e41ebd SHA-1: c6b14e481defa5cb1aeef910eddcbecaf631899c SHA-256: 345facbffa34de1be112dd43ab1bf0125d60975d89db3f4dcf182c6009f8a63b
214 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though partially garbled, includes the text 'Arri alexa sxt w manual pdf' and the malicious URL, suggesting a lure to download further content. The ML classifier strongly indicated maliciousness, and the presence of a redirector points to a phishing or malware distribution attempt.

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.
  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • 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/pify?keyword=arri+alexa+sxt+w+manual+pdf In PDF document text
    • http://refim.greenejunglefarm.com/uploads/1/3/1/4/131482962/xakigivaf.pdfIn PDF document text
    • http://files.bradley-hamilton.com/uploads/1/3/0/7/130775251/67febbeb2.pdfIn PDF document text
    • http://files.wapitinordic.com/uploads/1/3/2/7/132710632/3436910.pdfIn PDF document text
    • http://files.westsidewater.ca/uploads/1/3/2/7/132740413/0c8874.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/1/0428/2518/7491/files/38497487091.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1044/8798/files/43980990611.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2440/8988/files/aashto_lrfd_bridge_specifications.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1311/1961/files/statistical_arbitrage_machine_learning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7974/6201/files/autocad_electrical_training_course.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5149/1236/files/22513838238.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9289/2061/files/sebexiwaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1410/2950/files/41304197793.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1121/1425/files/manosi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6122/9206/files/robinizuzazujineruwodozu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0879/3510/files/toefl_test_examples.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 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_off000075b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75B6 5336 bytes
SHA-256: c737d7343c1f633008a1553cda49e2a27c743d6a0283cda04e8e1248096ecd98
font_01_sfnt_off000087d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87D5 10232 bytes
SHA-256: 54e9c09d57e0497d7d272de0d11a2853b5a8263eb37939b709c2abb2a3336e17

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