Malicious PDF — malware analysis report

Static analysis result for SHA-256 4585018070210f15…

MALICIOUS

PDF

74.4 KB Created: 2021-03-08 14:38:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 6bc85c21f8dfb6dda41c18a70e071555 SHA-1: 6935dfec75ed167609463ccd65cdb224b140dc18 SHA-256: 4585018070210f15af620546a0cc16b63975073ab66e56df6258e80d39f57ffb
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, with one pointing to `https://xajibur.ru/wix?keyword=parseltongue+translator+app`, suggesting a phishing or malware distribution lure. The presence of embedded JavaScript, though not fully detailed, likely facilitates the redirection or execution of malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://xajibur.ru/wix?keyword=parseltongue+translator+app PDF link annotation
    • https://cdn.sqhk.co/vapitinab/S0jfIhe/92396379073.pdfIn PDF document text
    • https://cdn.sqhk.co/balaragu/ItSJtje/birdy_gray_discount_code.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/023ffc32-c98e-4b81-8d34-0f6c682c5e58/98376803588.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59c91fd3-cc48-46c8-a50b-a78cf7cfc57f/zuvufupaloxo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a58b84d-6121-4c14-a945-4ee73cac9431/what_happens_to_tamlin_in_a_court_of_mist_and_fury.pdfIn PDF document text
    • https://s3.amazonaws.com/fivebo/35479288492.pdfIn PDF document text
    • https://9abff256-b119-4e75-a612-dfc075f5428e.filesusr.com/ugd/c73517_e3a43a0d3b134116aa503937e3d90d23.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zurovajij/3785087343.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5669517a-9ec3-4f8f-af4b-5667d2f79b74/12094891507.pdfIn PDF document text
    • https://3485775d-af35-4505-8fb4-f6750f575e04.filesusr.com/ugd/42f18e_285c2f4f8dde487390714eb32fe9ce71.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/babetafaperaxov/zonimudufumimusujaxat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c41ff79-a8ca-480b-977b-8a7b4e3dcdc0/koxedumunoxidarurivurav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0bc96923-21d4-4fc1-ab84-52e63568eee7/foxconn_n15235_mainboard_specs.pdfIn PDF document text
    • https://s3.amazonaws.com/fotojipifuzitul/fazisimejekipunodaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8bba5ca2-faf7-446d-970d-41642a83fc42/how_to_open_wd_my_passport_1tb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/879288d0-83a6-4553-8edb-a376d8c6f319/why_would_i_have_a_bald_spot_on_my_head.pdfIn PDF document text
    • https://s3.amazonaws.com/potofaw/zideguzikoxowerigaraxavi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a61426ea-6c9c-412b-93bb-410f674b5454/tesarusukerofutur.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_off0000e8c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8C8 4988 bytes
SHA-256: 3f014fa1c41124ceb02a705989fee2de1db0540c6767f99f01927fbdcf2f57ca
font_01_sfnt_off0000f9ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9CE 10208 bytes
SHA-256: a025fc7ba629c540b4917d90511e0bc1995aca0ea6b8d1330dfdaba7b294236d

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