Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fbd4cd6d3bc8059…

MALICIOUS

PDF

57.4 KB Created: 2020-10-08 15:59:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 3bf01cc704e86d0d71791e06225f0743 SHA-1: 09cb6b1b1e6d822b1325620062960fc0a897248c SHA-256: 0fbd4cd6d3bc80593b2895f2eac963308a79c152614de8353878acf79c0b3112
154 Risk Score

Malware Insights

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

The PDF contains a link that redirects to known malicious infrastructure, disguised as a free download. The PDF also features a link farm, suggesting an attempt to manipulate search engine results or distribute malicious links. The ML classifier strongly indicates malicious intent.

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.
  • 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.
  • 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://gettraff.ru/strik?keyword=how+to+sell+anything+to+anybody+joe+girard+free+download In PDF document text
    • http://datum.bergmanlandscaping.net/uploads/1/3/1/1/131163635/xifiwitejame_fijafuremutanid_zigupogegedo_kikuwoxogepone.pdfIn PDF document text
    • http://koregaj.centraliabbc.org/uploads/1/3/1/3/131382700/givamasazet.pdfIn PDF document text
    • http://files.fireartsarcata.com/uploads/1/3/2/6/132695472/a06df4.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/1/0481/6915/6775/files/xfinity_on_demand_movie_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6641/7567/files/gojolufatigatujeleximeme.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/0398/8128/files/boston_tea_party_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3723/6119/files/cal_poly_pomona_average_gpa_transfer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/3422/6069/files/lubotomupujodejojagewe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/5226/1287/files/gom_jabbar_wow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/7590/5957/files/asus_q87m-e_csm_specs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e9384f3-740f-4a63-b718-a3acdd55cdb1/kudojosa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9436f9a-b67a-411c-96b2-fdfde61d7f52/16662645691.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b006e22-f533-4c73-879d-4f4520a7f13e/xerimapu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68466609-94c2-4470-92d5-e1ac35c91cdc/34956177825.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_off0000922a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x922A 5328 bytes
SHA-256: f7d92297dcfeda43fa886af9f28f8f6d47b446d5818a65c03c11ae3b2cdd8585
font_01_sfnt_off0000a451.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA451 11192 bytes
SHA-256: 7d5607a405187f7d85d5808a583a1d33369c3b05446fd4d3984af0f98ba15c0c
font_02_sfnt_off0000ca48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA48 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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