Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6e0e5c803bc6d04…

MALICIOUS

PDF

34.4 KB Created: 2020-07-09 23:15:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-08-25
MD5: 6365e6322b8ad5d25816640c4b7052f3 SHA-1: c9df136632d229308b6cc8a737432816e00a7641 SHA-256: f6e0e5c803bc6d04a21ed24ea6c10842dbad9635d213de2e3628c98945b7db33
184 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDF files. One critical heuristic identified a link to known malicious redirector infrastructure. The document body, while containing product information, also embeds the same malicious URLs, suggesting a lure to drive traffic to potentially harmful sites. No scripts were extracted from this sample.

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/wb?keyword=frigidaire%20-%201.6%20cu.%20ft.%20over-the-range%20microwave%20-%20stainless-steel%20manual In PDF document text
    • http://files.asahionline.com/uploads/1/3/1/3/131398423/xagawiripameguj_lavemumokezam_zakurafe_fuzavo.pdfIn PDF document text
    • http://files.randymarinez.com/uploads/1/3/1/1/131163561/rotoli_ponumarubemod_kitaluloturam_wejam.pdfIn PDF document text
    • http://files.sgionet.com/uploads/1/3/0/8/130874413/zujojunejiguwimurob.pdfIn PDF document text
    • http://files.uonewman.org/uploads/1/3/2/6/132681356/bosilarodikupiwelade.pdfIn PDF document text
    • http://files.shopgingersgems.com/uploads/1/3/0/7/130739155/tuzafeliteketiw.pdfIn PDF document text
    • http://files.kimberlyjherb.com/uploads/1/3/1/4/131407734/6aaa27c09255.pdfIn PDF document text
    • http://files.fairlingtonfins.org/uploads/1/3/1/6/131637658/nixiwowuvigi_nekukutilexuf_pujuxef_zaxirefugazim.pdfIn PDF document text
    • http://files.madebyloulou.net/uploads/1/3/1/8/131871891/59bfb6ba928ffb6.pdfIn PDF document text
    • http://files.frankhagancontracting.com/uploads/1/3/2/6/132681404/zatamutofineve.pdfIn PDF document text
    • http://files.rocksolidmarriages.com/uploads/1/3/1/4/131437753/0e9042fc3693f7.pdfIn PDF document text
    • http://files.cozykidsembroidery.com/uploads/1/3/1/4/131409170/ninebafakafekip.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://gilogekef.files.wordpress.com/2020/06/mawukomiwafowiroro.pdfIn PDF document text
    • https://pisuruvofeja.files.wordpress.com/2020/07/sepawopap.pdfIn PDF document text
    • https://wajofub.files.wordpress.com/2020/06/19209061222.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/23083433767.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nimapudusakodinufuzexive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pizegavegip.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_off00004831.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4831 5692 bytes
SHA-256: 329d9ac51ad29c33f071a42e39805f5d4c714a0494baf19037dd93588e08aeb7
font_01_sfnt_off00005b80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B80 9656 bytes
SHA-256: 98324e52970a7878fab02896c6dda99acaf0040a51372dce0c75c22d86c0cb3b

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