Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7f8be9dd702c2e7…

MALICIOUS

PDF

36.1 KB Created: 2020-07-10 01:35:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ce44751ac30682c83a296872f6b99e21 SHA-1: 56de260c901f1d7e24dbc384b45c6c75a2466ca3 SHA-256: f7f8be9dd702c2e7a5c43ff8f6a01bf194965f3e4a7dbd3a3c25d792936a5679
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, including a critical redirector link to 'ttraff.com' and a large number of links to external PDF files, suggesting a link farm or redirection strategy. The document body mentions 'lspdfr how to use police radio', likely a lure to encourage users to click the malicious links. The ML classifier strongly indicated maliciousness.

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.com/wb?keyword=lspdfr%20how%20to%20use%20police%20radio
    • http://files.dreamleadershipconsulting.com/uploads/1/3/1/0/131070527/jaros.pdf
    • http://files.christiestimber.com/uploads/1/3/2/3/132302815/a80bec9c772bc.pdf
    • http://files.paulsfranchiseleague.com/uploads/1/3/1/4/131438249/kabuvoxije_kuvorenuzixuw_raxejusub.pdf
    • http://files.forspaciousskies.net/uploads/1/3/0/7/130738830/489db4fb2a5ad.pdf
    • http://files.msubsm.com/uploads/1/3/1/3/131384156/bb6d09234.pdf
    • http://files.nataliemcgreal.com/uploads/1/3/2/8/132814182/lajakos_dunabir.pdf
    • http://files.condzellasfarm.com/uploads/1/3/0/9/130969555/97c8dd5b0b0479.pdf
    • http://files.solidstatecircus.com.au/uploads/1/3/1/4/131437880/gitiwevele.pdf
    • https://www.albo1125.com
    • https://github.com/Albo1125/PoliceS
    • https://podinerexine.files.wordpress.com/2020/07/dukurukawexajuteb.pdf
    • https://subezokebiw.files.wordpress.com/2020/06/zakotixadarudetol.pdf
    • https://xagatefiwumu.files.wordpress.com/2020/06/12883622664.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/68769425665.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65621046881.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/96328102714.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/51031200676.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tifomev.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/55742160690.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51025654711.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_off00004fb6.bin
65f769aaa36cdb1e817abc375bb389a6ed8be31071a9fea6b2dacf71a57d472a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4FB6 5052 bytes
font_01_sfnt_off0000610d.bin
c07266d40de17690e00aadb9286bbfb8c21962ae3a388c9404c644d2bbacb9cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x610D 10060 bytes

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