Malicious PDF — malware analysis report

Static analysis result for SHA-256 430af4b222b46f27…

MALICIOUS

PDF

36.7 KB Created: 2020-10-01 09:40:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: ce68ee876d8438fa0f0fbffb48646c32 SHA-1: b0e37384c8ff2ce65993edbde1f4a94c013a023b SHA-256: 430af4b222b46f278f890fc6204450daa7bbdb462646b61003c224a0a514bfe2
154 Risk Score

Malware Insights

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

The PDF contains embedded URLs and is flagged as a malicious redirector and link farm, indicating an attempt to direct users to harmful sites. The ML classifier strongly supports its malicious nature. The document body, though partially corrupted, contains text related to 'basic civil engineering gtu book pdf' and includes the primary malicious URL, suggesting a lure for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://cctraff.ru/strik?keyword=basic+civil+engineering+gtu+book+pdf In PDF document text
    • http://zamematir.tintawitaelderliving.com/uploads/1/3/0/8/130874038/8938673.pdfIn PDF document text
    • http://files.savannahpowerwash.com/uploads/1/3/1/3/131379405/fefavezig-dojuxifapex.pdfIn PDF document text
    • http://zikub.mlvi.com/uploads/1/3/1/3/131383329/tedazijofu_varipezit.pdfIn PDF document text
    • http://mevuz.hillcountryimaging.com/uploads/1/3/1/8/131856539/jazatow.pdfIn PDF document text
    • http://files.honeyrockhiddentreasures.com/uploads/1/3/1/1/131163632/3860058.pdfIn PDF document text
    • http://jiguxawip.focused-fitness.com/uploads/1/3/1/3/131383483/26d4ae139700.pdfIn PDF document text
    • http://gixiwi.canberracelebranteileen.com/uploads/1/3/0/8/130874067/01fdab7bcc3.pdfIn PDF document text
    • http://files.bbluntsheabutter.shop/uploads/1/3/1/3/131383018/bajof.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/84a46d8c-eaf9-455c-8ac6-101f39c82ce3/mofiwezaxatuxenu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97572c40-a834-4e9b-b80c-e96eb81d5474/konamusoxozirafirurato.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6382e0d9-3d47-4a22-9fc1-92ff1a8f49eb/melugogosokolezun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/56109620666.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2004/9822/files/xadapuvixetuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2920/7957/files/macbeth_act_3_study_guide_questions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9975/0560/files/12708829202.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/4950/9015/files/icd_10_history_enlarged_thyroid.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_off00004f82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F82 5636 bytes
SHA-256: 8ba6a36ef266478d2793d97c5738d199e1f32e6ce00721ac7a74c64048ed8be1
font_01_sfnt_off000062c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62C6 10332 bytes
SHA-256: f2cb4a35e41ed6a70d5d9430e40973c421762515656e485e8a25abfe52837508

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