Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f9a174823cdd8a1…

MALICIOUS

PDF

32.3 KB Created: 2020-08-27 15:21:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2749029a7f7f62207afda31b8229798c SHA-1: 280c153efdbf50d7913a0a6be592bd3449be8bb8 SHA-256: 9f9a174823cdd8a191fa7840956bebd623dd04240d0a04e716af9fc1551af717
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, a technique often used to direct users to malicious sites. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=dr+michel+fahim+ottawa'. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains the same redirector URL, reinforcing the malicious intent.

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.com/pify?keyword=dr+michel+fahim+ottawa In PDF document text
    • http://files.oldfortsoap.com/uploads/1/3/2/6/132681201/fitukibuvo.pdfIn PDF document text
    • http://files.europeanmatchracetour.com/uploads/1/3/2/6/132682745/6515867.pdfIn PDF document text
    • http://files.theblessedfruit.com/uploads/1/3/1/8/131871871/kelapuduwun-kivudezup.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/1/0428/7440/5023/files/broken_heart_english_song_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3957/2643/files/45827111394.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nawujumukupuzuwoxelojoses.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0632/8985/files/65695771431.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5540/7511/files/formato_acta_de_reunion_excel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5297/1685/files/carrier_weathermaker_9200_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4490/4855/files/gestalt_theory.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4124/3814/files/pizejodemapugazamasaderun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3378/6530/files/bejenusexinezobabonolij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8651/9195/files/tuviwarivuxobiwajegipi.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004367.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4367 5036 bytes
SHA-256: 76c106da2dbf0359c9dd212d787c88a3c50b8bd14de18af6f9ecd4560fd6e460
font_01_sfnt_off0000546b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x546B 9496 bytes
SHA-256: f09252e8dc96a23748133210992cbe594b89a6fce55f763e9c82ba1237ccde23

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