Malicious PDF — malware analysis report

Static analysis result for SHA-256 73c772f2f8da43aa…

MALICIOUS

PDF

79.4 KB Created: 2021-05-20 21:11:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: e9e7c7931f522e0c7c683c0e92e00d2f SHA-1: b0226bdafaa23dc7f9ef9023c8178b4d59be1294 SHA-256: 73c772f2f8da43aaacc635545219779f998b826461d85192548ec541ac9c74ce
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or scam attempt. It contains numerous external URIs, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious content. The document body, though heavily obfuscated, appears to contain metadata related to '10 frame langstroth beehive plans', likely a lure to disguise the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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://leonvi.ru/strik?utm_term=10+frame+langstroth+beehive+plans PDF link annotation
    • https://dajoromu.weebly.com/uploads/1/3/4/3/134309711/2375883.pdfIn PDF document text
    • https://nebuxulusa.weebly.com/uploads/1/3/5/3/135306634/07811.pdfIn PDF document text
    • https://gomabimasukefop.weebly.com/uploads/1/3/4/4/134491899/bavukimulike_lidatepin_ratikufe_revinovevekuv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426080/normal_603363baa116d.pdfIn PDF document text
    • https://sipitajopidegol.weebly.com/uploads/1/3/1/4/131453448/1337451.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384039/normal_60550a7a1a9db.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388040/normal_5fe789d741c5d.pdfIn PDF document text
    • https://jitemino.weebly.com/uploads/1/3/0/9/130969659/a20d4cece3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451563/normal_6064a6614d378.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380675/normal_5fe4d83628bb3.pdfIn PDF document text
    • https://bejutiluji.weebly.com/uploads/1/3/4/4/134493367/7641ef46d8b45aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377125/normal_6046ee220dd23.pdfIn PDF document text
    • https://mozepuboxiwagu.weebly.com/uploads/1/3/6/0/136094106/fopig.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385647/normal_5fcf699c2828d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/nisiwanolom/91807373589.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c381091-aa40-41aa-b171-f43f828a1d0a/56759815457.pdfIn PDF document text
    • https://s3.amazonaws.com/voropa/how_to_find_horizontal_force.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b08ceaeb-d2e4-4450-9144-e865377af186/tuxekor.pdfIn PDF document text
    • https://s3.amazonaws.com/vokeri/poker_cheat_sheet_what_beats_what.pdfIn PDF document text
    • https://s3.amazonaws.com/xilasisefi/what_can_vegetarians_eat_for_dinner.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e370653-3c47-41d8-a2f3-042fb02394cc/interpersonal_communication_theories.pdfIn PDF document text
    • https://s3.amazonaws.com/najubu/69491717449.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_off0000f376.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF376 5616 bytes
SHA-256: ed97dbab19ecfc66853c735c1f200c9479f73bfd1a80380ecea42c3d81fefb9c
font_01_sfnt_off0001066c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1066C 11944 bytes
SHA-256: df207ba44045266c331d6e29a1e7cb3c22cb013c1e3e17eb1f8ec1203ea98680

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