Malicious PDF — malware analysis report

Static analysis result for SHA-256 e925fb181232b66d…

MALICIOUS

PDF

42.6 KB Created: 2020-05-18 22:55:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-08-25
MD5: 855995e3d7f91039b429482249cbb822 SHA-1: 55420448ddd8513eb3da2931504e0420e417f5e4 SHA-256: e925fb181232b66db104682ea58bdedea94e5990c951c242477dcd64103e6fb2
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of external links, many of which point to other PDF files hosted on various domains. This suggests a link farm or SEO poisoning tactic designed to drive traffic to these external resources. The document body itself is largely unreadable, but the presence of the URL 'http://acpstudios.com/uploads/1/3/0/7/130738506/130738506.html#format+ipod+shuffle+without+itunes' indicates a potential lure related to media devices. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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.
  • 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 http://acpstudios.com/uploads/1/3/0/7/130738506/130738506.html#format+ipod+shuffle+without+itunes PDF link annotation
    • http://dancingwolfkennels.com/uploads/1/3/0/9/130969354/zopibibivas.pdfIn PDF document text
    • http://texasdke.org/uploads/1/3/1/3/131384013/4986325.pdfIn PDF document text
    • http://batonrougeplumbinganddrain.com/uploads/1/3/0/6/130605368/sovawutomu.pdfIn PDF document text
    • http://harmony-4you.com/uploads/1/3/0/9/130969097/kamasazu.pdfIn PDF document text
    • http://lackooutdoor.com/uploads/1/3/0/6/130639875/luragodibafevometud.pdfIn PDF document text
    • http://qes-id.com/uploads/1/3/0/2/130271167/8843731.pdfIn PDF document text
    • http://ayurvedicmassageseattle.com/uploads/1/3/0/7/130739416/7905192.pdfIn PDF document text
    • http://realestatelicenseexamprep.com/uploads/1/3/0/2/130289209/9201567.pdfIn PDF document text
    • http://iammattcruz.com/uploads/1/3/0/9/130969973/mukuju-mofazuka-nakiteruxokos-sonireg.pdfIn PDF document text
    • http://cedarhost.com/uploads/1/3/1/3/131384600/69b3ebd7.pdfIn PDF document text
    • http://lakesidemowing.com/uploads/1/3/0/2/130289224/kujogifup.pdfIn PDF document text
    • http://cuttingedgepainters.net/uploads/1/3/1/6/131636584/763181.pdfIn PDF document text
    • http://pittsburghhairsalons.com/uploads/1/3/0/9/130969500/5328434.pdfIn PDF document text
    • http://fortworthbooths.com/uploads/1/3/1/8/131856188/tumupibowab_mujet_pelusuxig.pdfIn PDF document text
    • http://atotulsa.com/uploads/1/3/0/6/130621374/mexin_loripabe.pdfIn PDF document text
    • http://26rolls.com/uploads/1/3/0/3/130379232/9231088.pdfIn PDF document text
    • http://catterychivers.com/uploads/1/3/1/8/131856009/8329042b26f.pdfIn PDF document text
    • http://bezdiga.com/uploads/1/3/0/5/130547286/zevozinebizufibuza.pdfIn PDF document text
    • http://chbookpros.com/uploads/1/3/0/7/130739987/bagob-balika-tasor.pdfIn PDF document text
    • http://arcpairpress.com/uploads/1/3/0/8/130874672/xokojikefovusovamogu.pdfIn PDF document text
    • http://dramyhawkins.com/uploads/1/3/0/5/130543766/6039980.pdfIn PDF document text
    • http://saunbeunutop13.com/uploads/1/3/0/4/130477455/e4b89f.pdfIn PDF document text
    • http://irishcca.com/uploads/1/3/0/2/130289240/ruwozulapuku-benatixafoxer-bupojanaj-furemezafotuzin.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B4E 2024 bytes
SHA-256: a511fb262e2f240b0cc62b800179189f1c69c7b4d67d938f9bc0c5e12ef74554
font_01_sfnt_off000074e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74E2 12072 bytes
SHA-256: 331aea4ba59456733a90fb98d4ac5af8545408bccacf88aaa2e667919e6953c2

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