Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f17c3360d2b6f0a…

MALICIOUS

PDF

48.7 KB Created: 2020-07-30 14:54:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8048e3fd7079bd451f71dc854e886d2d SHA-1: 40a4218210164873083bc6c95f6fbdc7feadf31f SHA-256: 1f17c3360d2b6f0a67b69716b838746c62a98a1faceec6ded4dff1920442c04b
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, appears to be a lure related to 'designing power amplifiers pdf'. The presence of a link farm and a redirector suggests this PDF is part of a campaign to drive traffic to malicious sites, likely for phishing or malware distribution.

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=designing+power+amplifiers+pdf
    • http://files.iancarlsen.com/uploads/1/3/1/4/131454556/xedutikelo.pdf
    • http://files.mirrionerealtyllc.com/uploads/1/3/1/4/131453432/1655951.pdf
    • http://files.lightcodesmusic.com/uploads/1/3/1/4/131454501/2175077.pdf
    • https://cdn.shopi
    • https://cdn.shopify.com/s/files/1/0431/2514/5760/files/54317443286.pdf
    • https://cdn.shopify.com/s/files/1/0427/8861/8396/files/41903370977.pdf
    • https://cdn.shopify.com/s/files/1/0431/1249/7305/files/44976690009.pdf
    • https://cdn.shopify.com/s/files/1/0434/7750/0057/files/81213262738.pdf
    • https://cdn.shopify.com/s/files/1/0435/3448/3616/files/fukikigifiviluxugemaj.pdf
    • https://cdn.shopify.com/s/files/1/0436/0490/2045/files/20666045766.pdf
    • https://cdn.shopify.com/s/files/1/0440/1892/5726/files/noganazebulurunupuloxo.pdf
    • https://cdn.shopify.com/s/files/1/0431/0165/1101/files/55393846593.pdf
    • https://cdn.shopify.com/s/files/1/0431/6931/7013/files/jiwixepuxesuzobidoka.pdf
    • https://cdn.shopify.com/s/files/1/0430/2100/9053/files/vadafefogidemorevakaj.pdf
    • https://cdn.shopify.com/s/files/1/0439/2812/5595/files/minilugopeded.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_off00008099.bin
f13b69e99d2fb15a9a4df990b0c0eeedb1453ad5a6ad30c1e85c97f3ae9adc2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8099 5160 bytes
font_01_sfnt_off00009219.bin
0be2043087f7d7cbf39cc80fe459d5e7b9cdcd68768517c2cecf3ff47a6c7991		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9219 10380 bytes

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