Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef41bb7794879d94…

MALICIOUS

PDF

61.1 KB Created: 2020-08-13 00:42:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 053a3bb27926c15f8a10d5b32fe415ef SHA-1: 515293a4b036fca4cb630fe5a21e434619204067 SHA-256: ef41bb7794879d9489ccf0c2b780319e197157bc2c05fbfe16fb422ef69e12c8
150 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=cape+town+tourist+map+pdf'. This URL is embedded within the document body, suggesting an attempt to trick the user into navigating to malicious infrastructure. The presence of a PDF link farm heuristic further indicates a malicious intent to distribute links, likely for phishing or malware delivery. The ML classifier also strongly flagged this PDF as malicious.

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.cc/pify?keyword=cape+town+tourist+map+pdf
    • http://files.sarahjaneshangraw.com/uploads/1/3/1/8/131856956/zobapubojuzapok.pdf
    • http://files.portchteatogo.com/uploads/1/3/1/6/131637240/1088671.pdf
    • http://files.estatecomputers.net/uploads/1/3/1/8/131857970/7977666.pdf
    • http://xaxubif.libertymusicstudio.com/uploads/1/3/0/8/130814328/wekeworilalimu.pdf
    • https://cdn.shopify.com/s/files/1/0434/1461/8262/files/xepotoko.pdf
    • https://cdn.shopify.com/s/files/1/0431/8684/7903/files/41131387703.pdf
    • https://cdn.shopify.com/s/files/1/0438/6275/3445/files/85199932841.pdf
    • https://cdn.shopify.com/s/files/1/0433/7149/5574/files/pozegeguw.pdf
    • https://cdn.shopify.com/s/files/1/0429/7143/1065/files/49831848530.pdf
    • https://cdn.shopify.com/s/files/1/0440/5189/0341/files/32809529509.pdf
    • https://cdn.shopify.com/s/files/1/0435/2871/6440/files/asignatura_estatal_primero_de_secundaria_2020.pdf
    • https://cdn.shopify.com/s/files/1/0440/5533/0981/files/adding_fractions_with_like_denominators_word_problems.pdf
    • https://cdn.shopify.com/s/files/1/0436/0683/5358/files/aromaticity_file.pdf
    • https://cdn.shopify.com/s/files/1/0434/3015/0300/files/jasonezoxofimubuv.pdf
    • https://cdn.shopify.com/s/files/1/0434/4555/1271/files/16893037955.pdf
    • https://cdn.shopify.com/s/files/1/0433/7162/6659/files/44906586155.pdf
    • https://cdn.shopify.com/s/files/1/0431/8402/9854/files/simagu.pdf
    • https://cdn.shopify.com/s/files/1/0435/3681/0135/files/80418832693.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a5c5.bin
93a143494c3d04ae3283504ecdd096ecee027c9ba0ea8c562404226430f05498
pdf-font-stream PDF embedded font (sfnt) at offset 0xA5C5 5152 bytes
font_01_sfnt_off0000b746.bin
7ec3b727345b175026de46a8ba631fc67a885bf21f14ce87765dfd373d39ceb6
pdf-font-stream PDF embedded font (sfnt) at offset 0xB746 9924 bytes
font_02_sfnt_off0000d94e.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0xD94E 4324 bytes