Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cbc8f96a4beacbb…

MALICIOUS

PDF

46.8 KB Created: 2020-08-24 04:50:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: da5f760d2b52bc700452bb541ec08aa1 SHA-1: 82eafdef8d4b501e3cb8c860acf989805c3addaa SHA-256: 2cbc8f96a4beacbb772407e9523f9c2edf392f716fcd3709dbe131a6ad7050af
152 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and contains a large number of embedded links. One critical heuristic identified a link to a known malicious redirector, 'ttraff.cc', which likely serves as a lure for phishing or malware delivery. Another critical heuristic noted a link farm of external PDFs, many hosted on Shopify, suggesting an attempt to manipulate search engine results or distribute content. The document body contains garbled text and the redirector URL, reinforcing the malicious intent.

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://ttraff.cc/pify?keyword=game+seperti+ameba+pico+di+android
    • http://files.waltonmanorinn.com/uploads/1/3/1/3/131380848/bamomujebe_susofazado_nifokewemi.pdf
    • http://totalopi.aerodox.com/uploads/1/3/1/8/131857419/davimobejetigu_vulovolodukele.pdf
    • http://files.kevinanthonyhull.com/uploads/1/3/0/8/130874266/9024802.pdf
    • http://files.judithasem.com/uploads/1/3/0/9/130969475/mububuxe_fazebapovopo.pdf
    • https://s.kaskus.id/e3.1/images/layout/home-logo-n.png51244https://www.kaskus.co.id/thread/523
    • https://cdn.shopify.com/s/files/1/0435/9628/4062/files/general_english_aptitude_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0439/3625/2072/files/ma_challan_form_punjab_university.pdf
    • https://cdn.shopify.com/s/files/1/0433/2371/9845/files/nudopegidewumako.pdf
    • https://cdn.shopify.com/s/files/1/0429/1526/6713/files/bizoluwur.pdf
    • https://cdn.shopify.com/s/files/1/0432/2577/6288/files/rebatezuris.pdf
    • https://cdn.shopify.com/s/files/1/0438/9175/3115/files/buku_agama_islam_kelas_12_kurikulum_2020_penerbit_erlangga.pdf
    • https://cdn.shopify.com/s/files/1/0430/1019/5605/files/36567636379.pdf
    • https://cdn.shopify.com/s/files/1/0428/1332/5471/files/jaxefosa.pdf
    • https://cdn.shopify.com/s/files/1/0435/3441/8075/files/pizepibumusizuwesisosinug.pdf
    • https://cdn.shopify.com/s/files/1/0438/4423/9510/files/96498584437.pdf
    • https://cdn.shopify.com/s/files/1/0433/2666/8952/files/kerajekevuvebaf.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000071b9.bin
f176847ae909e873e81e0cca89d41e3060568c3e0f2e7edde5322c1b657f9e7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71B9 5360 bytes
font_01_sfnt_off000083cc.bin
aad71cac2aca6c68cc5292c31797eb2888c348ed108e2ec8884c3790b4690ef6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83CC 13284 bytes

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