Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a1556e259a1ad93…

MALICIOUS

PDF

43.4 KB Created: 2020-08-21 16:43:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a807907207f83865ef577a4722b2a1b2 SHA-1: b3a2da05a8fe1e88c58faed3875f4a1d1e9f9cd4 SHA-256: 4a1556e259a1ad938c39b9c58db9b5ec118db0b4370d2c51dbbdfa088935ae4a
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a malicious redirector link disguised as a Netflix promotion, aiming to trick users into clicking it. The document body, though partially corrupted, contains the string 'Netflix series en macbook' and the malicious URL, reinforcing the phishing lure. The presence of numerous other PDF links suggests a link farm tactic to obscure the malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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/pify?keyword=netflix+series+en+macbook
    • http://files.johnandmorgana.com/uploads/1/3/0/7/130775554/saxojig-fowilexukoluvag-lelavitap-mutifubo.pdf
    • http://files.sproutsmyanmar.com/uploads/1/3/2/3/132302863/giburapudiga-dojowul.pdf
    • http://files.transportchicago.org/uploads/1/3/1/4/131407353/9452806.pdf
    • http://files.tompa-fg.com/uploads/1/3/0/8/130874482/vilidazofawad.pdf
    • http://nelef.biocyclic-network.net/uploads/1/3/1/0/131070487/6813051.pdf
    • https://cdn.shopify.com/s/files/1/0438/4302/7106/files/77131141214.pdf
    • https://cdn.shopify.com/s/files/1/0437/6847/9906/files/blessed_be_your_name_piano.pdf
    • https://cdn.shopify.com/s/files/1/0436/0785/1171/files/inventor_view_2020.pdf
    • https://cdn.shopify.com/s/files/1/0429/1313/6799/files/natekamelufasowif.pdf
    • https://cdn.shopify.com/s/files/1/0437/1241/3851/files/protein_structure_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0431/1223/5159/files/62901573757.pdf
    • https://cdn.shopify.com/s/files/1/0433/7863/8999/files/12468391639.pdf
    • https://cdn.shopify.com/s/files/1/0430/0754/1401/files/group_by_in_r.pdf
    • https://cdn.shopify.com/s/files/1/0439/1629/6360/files/redarumarigepejanunejovi.pdf
    • https://cdn.shopify.com/s/files/1/0449/0225/2699/files/statistical_methods_j_medhi.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_off00006ccf.bin
cee499e237581c44881bcc9bdcc3a7e4cc9ad5805d8d5ee5bb98d8f0bf9312a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CCF 5268 bytes
font_01_sfnt_off00007ea6.bin
5aa24d198aa7e5874cdbee52bb4919bb1e81d54f00fefbda36d184211ec73b86		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EA6 10088 bytes

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