Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e69789f1441cb22…

MALICIOUS

PDF

42.4 KB Created: 2020-11-01 05:09:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 2c0df66de196b7cc2ed9db6e34c6ba0e SHA-1: 2f66045decd3ab9cb6c3f0e69bb7b28f1d3175be SHA-256: 5e69789f1441cb2243b3db732c0de8410849fc6d72446945e88117cdb45a7018
134 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that redirect to a URL advertising a 'Spotify premium offline apk free download'. This is a common lure for phishing or malware distribution. The ML classifier strongly indicated maliciousness, and the embedded links point to known malicious redirector infrastructure. No scripts were extracted, but the document's structure and embedded links suggest a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=spotify+premium+offline+apk+free+download In PDF document text
    • https://godadonalizubo.weebly.com/uploads/1/3/1/4/131437317/joxovezexem-waxegusomukefa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406771/normal_5f9282a1dd0e2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365655/normal_5f9a67f939214.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407810/normal_5f9bc0f492c56.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zijivevip/mobile_legends_cheats.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/life_cycle_of_t4_bacteriophage.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aaa6b8bf-1a62-4dfb-bbf6-b4be17be1fd3/25956625466.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/1915/2802/files/zagiduzokipido.pdfIn PDF document text
    • https://s3.amazonaws.com/baxegezivumi/57005690425.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0586/8193/files/george_jr_high_rosenberg_tx.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/5709/3045/files/24622030318.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 3

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_off000066cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66CD 5372 bytes
SHA-256: 81fe4759d2dd662c0b97993e4d74b0d9c11e7f31f0dc1913d6c530c280d7bf4a
font_01_sfnt_off00007916.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7916 10400 bytes
SHA-256: 5f6cf6f83c7410baab4415652398f6cacb30b7232b7ab3acf049ffce6da74c19

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