PDF malware analysis — malicious · ffd6efff5519aa2b

MALICIOUS

PDF

85.4 KB Created: 2021-05-26 07:59:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24

MD5: 98e4a78c52fe6dfc5ba11ae24a93fd27 SHA-1: 54ff9f3801b3a5777da58e95ad77e070d8dc48c9 SHA-256: ffd6efff5519aa2b5151da1616595e6de1d2d739f5896853696ffb33b73a0620

164 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9925

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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.
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
External URI info PDF_URI

PDF contains an external URL action
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://xezojetit.ru/strik?utm_term=pokemon+black+2+gba+rom PDF link annotation
- https://static.s123-cdn-static.com/uploads/4406775/normal_5ffb5f6e46cf1.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4530036/normal_6039216e4a90a.pdfIn PDF document text
- https://nesojusoxo.weebly.com/uploads/1/3/4/6/134631750/983eb6977.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369633/normal_60292f0c76130.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4449615/normal_605c45873a2af.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368788/normal_6051c9c3a4d8f.pdfIn PDF document text
- https://dogerisu.weebly.com/uploads/1/3/0/8/130874322/57a4de5e.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4383795/normal_60048fb223987.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4488315/normal_603c5a16407f5.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4468255/normal_606abce233e55.pdfIn PDF document text
- https://jufasoxoko.weebly.com/uploads/1/3/5/3/135315704/tadipalute-laruvunoxilifo-jimujalawolun-jilogebukik.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4401711/normal_606896702626a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4427498/normal_604c9b31936ec.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4421036/normal_5fe97039491fb.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4495241/normal_60579cf5569d0.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4489587/normal_6056b766d9787.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365638/normal_604eb27edb674.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://s3.amazonaws.com/liguwubore/12029519406.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/9ac4c8ed-b8d8-4a08-a5d6-650f61f6921d/what_is_the_average_cost_of_a_water_softener.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/2442b74e-eed3-4548-9023-996e70380f14/viwutirazuvujezolubobudur.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ea61fc78-38cd-4b6f-a255-5b5b6d4122eb/interview_questions_to_ask_ceo_candidates.pdfIn PDF document text
- https://s3.amazonaws.com/julaxel/differential_calculus_notes.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/69319444-b944-403a-9bce-38b8fc63417b/gefafonuvaxofobotofelono.pdfIn PDF document text
- https://s3.amazonaws.com/jajoxulabojaso/claude_debussy_claire_de_lune_sheet_music.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/fbc8ca8a-e1ab-4700-beb4-e569be072c9a/how_to_use_wildgame_sd_card_reader.pdfIn PDF document text
- https://s3.amazonaws.com/jeworurowam/papowimebo.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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000ee9b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEE9B	5540 bytes
SHA-256: `28046b2a5ac405fcfe0e6ffef46492f53c71390f915adc5aa88d134fd225f14c`
`font_01_sfnt_off000101bd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x101BD	4936 bytes
SHA-256: `70da4fcba2164a574761c0fbb9e6284e5b8c94f8db54818da3eaffb47c27bff6`
`font_02_sfnt_off00011264.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11264	11076 bytes
SHA-256: `c94ef2638ef832c7c72a5e06e4d21fbbee86a3214c372dae49438e44aea632f3`
`font_03_sfnt_off00013821.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13821	4324 bytes
SHA-256: `a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f`

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