PDF malware analysis — malicious · 3ed47ba55cccccc5

MALICIOUS

PDF

124.1 KB Created: 2020-10-29 08:00:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23

MD5: 8a52945778a1bbb18cc5a2eb89f1723b SHA-1: d6fa23570a7738205154969b7aa773120e9a4d69 SHA-256: 3ed47ba55cccccc5bd7ddb1b2dca11a7338e205d571ae9662f1c0fe90bfa2eed

170 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple heuristics indicating malicious intent, including a critical finding for a redirector link to 'gettraff.ru'. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The presence of numerous external PDF links also points to a link farm or SEO poisoning tactic. The ML classifier strongly supports the malicious verdict.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

Heuristics 6

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.
Urgency / deadline lure low SE_URGENCY_LURE

Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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
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/123?keyword=altec+lansing+atp3+manual In PDF document text
- https://cdn-cms.f-static.net/uploads/4368248/normal_5f8c04d8cde9d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369305/normal_5f8b33bacac61.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366017/normal_5f8ad236a1afe.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4374196/normal_5f9a48295750a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367940/normal_5f8df23ae01e4.pdfIn PDF document text
- https://dijumigomeruke.weebly.com/uploads/1/3/4/3/134309809/xibaw_juwajitupaf_fekatojokekuru.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368949/normal_5f9a39f50245d.pdfIn PDF document text
- https://riragojefo.weebly.com/uploads/1/3/1/8/131857115/zanabopixajebe.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367289/normal_5f89898cb3238.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4377407/normal_5f912d7485bb7.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4377380/normal_5f98efdd943d2.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366357/normal_5f876297a0822.pdfIn PDF document text
- https://duxixujojive.weebly.com/uploads/1/3/0/7/130739103/mukej-jepefalolamux-vuxevine.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365563/normal_5f87335db99b0.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/vuliwisuwig/john_deere_44_snowblower_parts_manual.pdfIn PDF document text
- https://s3.amazonaws.com/xetasif/all_types_bearing_skf.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0498/0041/3346/files/determinantes_de_la_oferta_agregada.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0500/4420/7293/files/instagram_application_apk_download.pdfIn PDF document text
- https://s3.amazonaws.com/pugomonapoxuxe/dubimidafebimorarubodog.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0484/0341/5197/files/morbidelli_author_430s_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/7877/9047/files/podiresibozotadubozaduzel.pdfIn PDF document text
- https://s3.amazonaws.com/xanebavifamopez/levasefazedebib.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.

Filename	Kind	Source	Size
`font_00_sfnt_off000166f6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x166F6	16616 bytes
SHA-256: `f04588a2e2ca82cd5de1e95d2281818b3d59b1236d4b0b705bb906520c49c461`
`font_01_sfnt_off00019cd0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x19CD0	5312 bytes
SHA-256: `73391fa7de91f30d45c6f780542aa0ff249366173fc14d0f353acbe706a235fb`
`font_02_sfnt_off0001aed7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1AED7	15924 bytes
SHA-256: `6e0ade0c2b6ae377aaa3eae2599255144d54dec738b7b645cc2e98d157718d79`

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