Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cca9ab939fff51e…

MALICIOUS

PDF

120.6 KB Created: 2021-04-27 12:30:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 5e207b2222c4b8db8367da8118f2dd05 SHA-1: 2c48549ad2e73abd1fe43a8d67db97a0e383c9f3 SHA-256: 5cca9ab939fff51e2b19f6cbf1dcf9aeb39ddfac86f6eb06744abd84e94deedb
126 Risk Score

Malware Insights

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

The PDF file contains an embedded URI that redirects to a suspicious domain, masquerading as a search result. This technique is commonly used in phishing campaigns to trick users into visiting malicious websites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/strik?utm_term=what+time+is+the+sims+4+update+today PDF link annotation
    • http://fesotisifofil.mygamesonline.org/english_alphabet_worksheet_for_nursery.pdfIn PDF document text
    • http://all-casino.xyz/savurebagazepoladyjel8.pdfIn PDF document text
    • http://finansi-7.online/stress_reduction_activities_for_college_studentsotl8d.pdfIn PDF document text
    • http://samozanyat.info/wawopobekunexugemojeonr7.pdfIn PDF document text
    • http://fastpysystem.online/leruzovem2y9qu.pdfIn PDF document text
    • http://kozugufasuroti.mygamesonline.org/56958984505.pdfIn PDF document text
    • http://support-copyrighthelpservice-about.com/vebexenarofaped6rz2p.pdfIn PDF document text
    • http://shtampshop.ru/idle_shopping_mall_levels9fp2s.pdfIn PDF document text
    • http://organicsss.space/pinatidukaboxerepusatupvq664.pdfIn PDF document text
    • http://3gusevshop.website/march_2019_satv5035.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/82520554-65d4-4a52-b58f-9670a8b6a0ae/4416266525.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a80b1a58-d519-46c4-8a8e-15eb0829cfc7/85923243392.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/514d2a63-a9cd-4c9e-a798-48d6c54f43b4/healthy_smoothie_recipes_weight_loss_strawberry.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53630b93-534e-4ec9-9cae-11f15b739716/pepasodivepotevinu.pdfIn PDF document text
    • https://s3.amazonaws.com/libeganot/insinkerator_56_installation_video.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5eab475-f008-494e-b55c-f6dc6df821c3/vaniruviboso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c349630b-c21a-43e3-9a76-a8a653d90e94/48444523231.pdfIn PDF document text
    • http://dapufojutujat.atwebpages.com/becoming_a_supple_leopard_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18db0cd9-ad97-4e63-a495-644d53d5d69b/behringer_ultracurve_pro_deq2496_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5865f1f8-2764-4bf8-8826-659cd7ad6f42/john_deere_gator_hpx_4x4_starter_replacement.pdfIn PDF document text
    • http://pekomuvave.myartsonline.com/toefl_structure_sample_test.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxefemebidaz/99232916966.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2ef9070-ac7d-4754-b923-39f451832903/amc_10_12_scoring.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0604e9bb-fa31-433e-a64a-a4003d9027c5/62486216451.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00019b2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19B2B 5276 bytes
SHA-256: cda3722130a86c499e8f40af9dcfc86c3f2f8c25078a312d37b42373e6a03dfb
font_01_sfnt_off0001ad13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AD13 11632 bytes
SHA-256: 90d5423f877e69fbaa8456c9e540ce5e27c3a2492bd0e197230bf98a7b4da5fe

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