Malicious PDF — malware analysis report

Static analysis result for SHA-256 82f1a0478260032b…

MALICIOUS

PDF

80.9 KB Created: 2021-05-22 14:37:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 81cae2d132dd8caaeade85b277a55775 SHA-1: e304fc45c3762f05bf6dcec5626b0bd5e052e481 SHA-256: 82f1a0478260032b54ee034ebd0e6ffa8073036c676b3776feffd70a41eb8a35
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a large number of external links, many pointing to disposable hosting services, suggesting a link farm or spam distribution tactic. The ML classifier and ClamAV detection strongly indicate maliciousness, with the primary URL suggesting a phishing or scam lure related to 'crossy road cheat codes'. Although no scripts were explicitly extracted, the PDF structure and numerous external links are indicative of malicious intent, likely to redirect users to further malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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.
  • 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.
  • 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://ponafet.ru/strik?utm_term=crossy+road+cheat+codes PDF link annotation
    • https://naworetomepixi.weebly.com/uploads/1/3/7/5/137504938/55432.pdfIn PDF document text
    • https://mujatasibofemi.weebly.com/uploads/1/3/5/9/135963028/mebaga_bavidorakalus.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485939/normal_6005e51b3208c.pdfIn PDF document text
    • https://sazotavivi.weebly.com/uploads/1/3/1/1/131164406/2743237.pdfIn PDF document text
    • https://nupinegudoxaxu.weebly.com/uploads/1/3/5/3/135350485/tukiwutiwupepemepaso.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405195/normal_5fde8fba304e7.pdfIn PDF document text
    • https://fokididekorup.weebly.com/uploads/1/3/0/7/130775810/vugexajono.pdfIn PDF document text
    • https://kosilamegorigi.weebly.com/uploads/1/3/1/4/131409210/pofamalipiwegev_dezuborafa.pdfIn PDF document text
    • https://tidovikazixuwuj.weebly.com/uploads/1/3/4/3/134316919/vatewepezero-mepininelejula.pdfIn PDF document text
    • https://zuwuloju.weebly.com/uploads/1/3/2/6/132681456/vixowojibobe.pdfIn PDF document text
    • https://jovinafunen.weebly.com/uploads/1/3/2/6/132695325/zazilu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480170/normal_6011ad0f4fc96.pdfIn PDF document text
    • https://kefuluseze.weebly.com/uploads/1/3/1/3/131398598/toriravetisiwigoj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408170/normal_604005d8789b6.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://uploads.strikinglycdn.com/files/2783fe46-7997-4d4f-8842-5a0cd3301af3/kageromorelinijebividuw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b592a1d4-7a44-436f-97f4-b25e8ce70272/hardest_video_game_boss_ever_reddit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab73fdfa-7208-4333-ad99-812bfba565d2/the_secret_life_of_the_american_teenager_season_1_episode_2_online_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19813bcb-3a42-47ef-a2f9-773d0009e9e1/new_sat_ppt_2017.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c29ac49f-dd62-461b-a5b0-3261bbf851f7/sifivowe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3adf86a6-4a48-4145-a79c-788e2c19c340/what_is_my_grandmother_asked_me_to_tell_you_shes_sorry_about.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e0e13fe-40fd-4944-a750-69561fcbab01/how_do_you_determine_the_strength_of_intermolecular_forces.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_off0000ee0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE0B 4752 bytes
SHA-256: cc3c20a803f3798f6a5d91b32a255950d9b396fc7fb3f40e8298772d0959d7bb
font_01_sfnt_off0000fe4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE4D 12680 bytes
SHA-256: 89a1f43c2f6703dd2d58ec37a4e274c006ebd22f5e40ef926a9c315859b5c1f9
font_02_sfnt_off000127f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127F2 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

Open this report in the interactive analyzer, or submit your own file for analysis.