Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb6cb4912f3f7bc5…

MALICIOUS

PDF

42.5 KB Created: 2020-08-23 11:33:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 89224ae5c45ce1b8750e2c732484e2d3 SHA-1: 9e32816c04a65aa087ac2e5cd05961c23f5f34eb SHA-256: bb6cb4912f3f7bc560c8fa76e85c5ff35ea2e32fcee6e63cb273d6bc42f74c8f
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=bracketing+camera+app+android'. This suggests the document is designed to redirect users to malicious content, likely for phishing or malware distribution. No scripts were extracted from this sample.

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=bracketing+camera+app+android
    • http://files.atowncenter.org/uploads/1/3/1/4/131453698/belul.pdf
    • http://pavujapur.evangelizenorcal.com/uploads/1/3/0/8/130874284/0bdf23b1.pdf
    • http://files.connectionsonthebay.com/uploads/1/3/1/3/131398140/1b37a3edbd7.pdf
    • http://files.irentphilippines.com/uploads/1/3/1/4/131407857/1553387.pdf
    • https://cdn.shopify.com/s/files/1/0433/1008/8360/files/76973660746.pdf
    • https://cdn.shopify.com/s/files/1/0437/5219/4202/files/quantitative_aptitude_solving_tricks.pdf
    • https://cdn.shopify.com/s/files/1/0429/6677/8009/files/wonozotowesevakipemenagul.pdf
    • https://cdn.shopify.com/s/files/1/0429/8866/7039/files/78115122083.pdf
    • https://cdn.shopify.com/s/files/1/0431/4152/9754/files/duxekebafakotenurajasotub.pdf
    • https://cdn.shopify.com/s/files/1/0435/9972/4702/files/nuligavodizutawufek.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/baxumedufimoval.pdf
    • https://cdn.shopify.com/s/files/1/0429/0225/7823/files/new_assamese_video_asomi._in_2019.pdf
    • https://cdn.shopify.com/s/files/1/0430/7379/8298/files/99027314751.pdf
    • https://cdn.shopify.com/s/files/1/0437/0805/5720/files/how_to_improve_my_english_pronunciation.pdf
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/ganuvavupebuj.pdf
    • https://cdn.shopify.com/s/files/1/0428/2574/4547/files/leladikunudigeb.pdf
    • https://cdn.shopify.com/s/files/1/0428/8937/9993/files/mitugixoxegikebori.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_off000067df.bin
fce7cffea45ffef7746a8db81d84d885573122e1227b41861758a435cb671402		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67DF 5296 bytes
font_01_sfnt_off000079c5.bin
70691ae275322dca97632e3dab25f3da15e3ee9d9f4928043ec88fda215e663d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79C5 10196 bytes

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