Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd9f4f79d90928be…

MALICIOUS

PDF

45.6 KB Created: 2020-08-04 01:50:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 82267faef0ab411f32f2ffd45dfeeae1 SHA-1: 4793c3f40515d332a65c1c33d9dd99585d666472 SHA-256: dd9f4f79d90928be7c3e7083c28b2d8eee1f234afc24eec28a927cd17463475d
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service (ttraff.cc). This indicates a phishing or social engineering attempt to direct users to malicious content. The presence of a malicious redirector link is the primary indicator of malicious intent. No scripts were extracted, and the document body was heavily obfuscated, making it difficult to determine the exact lure.

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=business+environment+pdf+project
    • http://files.blendedak.us/uploads/1/3/2/6/132696029/diwupaxisu_mejux_gefupixejuv.pdf
    • http://files.mrbcontructionllc.com/uploads/1/3/0/7/130738681/5e05da77f1.pdf
    • http://files.candle-licious.com/uploads/1/3/1/4/131437438/451951.pdf
    • https://cdn.shopify.com/s/files/1/0437/5488/1185/files/cat_s_in_the_cradle_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0428/3292/0732/files/dalumogidibaradomiruwi.pdf
    • https://cdn.shopify.com/s/files/1/0433/7929/4358/files/haeli_noelle_wey.pdf
    • https://cdn.shopify.com/s/files/1/0430/7812/3680/files/zigiloluri.pdf
    • https://cdn.shopify.com/s/files/1/0432/8154/7428/files/68623180974.pdf
    • https://cdn.shopify.com/s/files/1/0428/3337/9487/files/82425339284.pdf
    • https://cdn.shopify.com/s/files/1/0429/9148/5091/files/sojawaxinojewaxuto.pdf
    • https://cdn.shopify.com/s/files/1/0429/9885/7891/files/29208286509.pdf
    • https://cdn.shopify.com/s/files/1/0430/1763/3949/files/81647807518.pdf
    • https://cdn.shopify.com/s/files/1/0436/4356/8278/files/43695366780.pdf
    • https://cdn.shopify.com/s/files/1/0428/2938/1791/files/91956074423.pdf
    • https://cdn.shopify.com/s/files/1/0431/0453/4692/files/jedoduvulereraded.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_off00007548.bin
afc372a308e6fb385308f76ded741fa169f19ff07929e693fb9338b2e81a15c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7548 5244 bytes
font_01_sfnt_off0000871e.bin
153b4c0335ab0a1c547d920a17f3a4b71500aeb0d78617494e93d006e97d9b47		 pdf-font-stream PDF embedded font (sfnt) at offset 0x871E 10192 bytes

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