Malicious PDF — malware analysis report

Static analysis result for SHA-256 b177a6560279b8af…

MALICIOUS

PDF

44.0 KB Created: 2020-08-18 23:14:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bb4f08bb3192b048a76ced3e849500b6 SHA-1: bece9b4987bb2d31ff11b9ef8fb71ccc53cf8548 SHA-256: b177a6560279b8af4d99dff0fbfb9da88ee23cdd599c02557d1dc68ecb6235a2
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a malicious redirector at 'https://ttraff.com/pify?keyword=avery+template+5160+microsoft+word'. This URL is likely used to direct users to malicious content. The document body, though heavily obfuscated, contains references to the Avery template and the malicious URL, reinforcing the lure. The presence of many external PDF links suggests a link farm for SEO poisoning or traffic redirection.

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=avery+template+5160+microsoft+word
    • http://files.johnriebli.com/uploads/1/3/2/3/132303410/kizex-runotevobux-xagivovufako-misikuso.pdf
    • http://files.drkimsage.com/uploads/1/3/1/6/131637919/jusug_gojebutoxije_sexesosixi.pdf
    • http://files.integrativefitnessnursing.com/uploads/1/3/0/8/130874691/sigejogaleg-kajode-nenume.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/9959313526.pdf
    • https://cdn.shopify.com/s/files/1/0431/1154/7037/files/72981741577.pdf
    • https://cdn.shopify.com/s/files/1/0430/7514/1783/files/afficheur_lcd_graphique.pdf
    • https://cdn.shopify.com/s/files/1/0437/1437/9930/files/35601659470.pdf
    • https://cdn.shopify.com/s/files/1/0429/0881/1427/files/gutapa.pdf
    • https://cdn.shopify.com/s/files/1/0432/2725/0850/files/bajiwepilabixijob.pdf
    • https://cdn.shopify.com/s/files/1/0437/8918/9272/files/71037496264.pdf
    • https://cdn.shopify.com/s/files/1/0434/4381/4560/files/57484762510.pdf
    • https://cdn.shopify.com/s/files/1/0437/8322/5506/files/nibonaxoduveka.pdf
    • https://cdn.shopify.com/s/files/1/0431/8052/3678/files/49571655629.pdf
    • https://cdn.shopify.com/s/files/1/0434/9752/1317/files/75028048137.pdf
    • https://cdn.shopify.com/s/files/1/0429/5216/3481/files/principle_of_programming_language_tutorial_point.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_off00005f7e.bin
4f1f4271a502ccb6f7e835c89efb372de766927096100402743a43e2ab9ba132
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F7E 5696 bytes
font_01_sfnt_off00007303.bin
040b8e326effa00c62fed83aff9b25ef3caac71ac638d76794a8d2bd01f1063d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7303 9904 bytes
font_02_sfnt_off000094e8.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x94E8 4324 bytes