Malicious PDF — malware analysis report

Static analysis result for SHA-256 de09e72fd84575d9…

MALICIOUS

PDF

49.3 KB Created: 2020-08-13 22:29:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 714436e61ac4ba8d101facf264fc0b74 SHA-1: a60042e24bb964f2b9273c1a7d081cac631a90dd SHA-256: de09e72fd84575d9918a00217c2ae0f32c059f8e054f59b8189373a3bcbde5cc
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a link to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=bluestacks+developer+options+apk', suggesting a lure related to 'bluestacks developer options apk'. The presence of a large number of external PDF links, many hosted on Shopify, further supports a link farm or SEO poisoning tactic to distribute the malicious redirector.

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=bluestacks+developer+options+apk
    • http://nanenitox.freemaninsure.com/uploads/1/3/0/7/130776449/2962541.pdf
    • http://ronaw.ummahcharms.com/uploads/1/3/2/8/132814930/mosaposudopu_woluna.pdf
    • http://files.comforttrainer.net/uploads/1/3/2/6/132681002/4312007.pdf
    • http://files.ohiothunderbasketball.com/uploads/1/3/0/7/130739616/juvinajoxeg.pdf
    • https://cdn.shopify.com/s/files/1/0437/7359/1703/files/12746836614.pdf
    • https://cdn.shopify.com/s/files/1/0431/3484/5079/files/83788111053.pdf
    • https://cdn.shopify.com/s/files/1/0430/4669/9165/files/use_of_history_in_antony_and_cleopatra.pdf
    • https://cdn.shopify.com/s/files/1/0434/7206/0573/files/vinovanovudama.pdf
    • https://cdn.shopify.com/s/files/1/0432/2826/6654/files/57881529068.pdf
    • https://cdn.shopify.com/s/files/1/0436/7525/4937/files/sidijavowosakibevef.pdf
    • https://cdn.shopify.com/s/files/1/0434/0708/1630/files/html_to_java_api.pdf
    • https://cdn.shopify.com/s/files/1/0433/7605/0330/files/62458901179.pdf
    • https://cdn.shopify.com/s/files/1/0436/8482/3205/files/kilune.pdf
    • https://cdn.shopify.com/s/files/1/0432/4173/4312/files/sidujopumazakenoxotazuvi.pdf
    • https://cdn.shopify.com/s/files/1/0430/6203/4589/files/flush_door_design_catalogue.pdf
    • https://cdn.shopify.com/s/files/1/0434/9480/1568/files/78039552362.pdf
    • https://cdn.shopify.com/s/files/1/0429/4580/6503/files/45_55_reddit.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_off00007587.bin
b6b6cd4064eb3cc5bdf8190a2b97ad6761271c27f6febe744468f28ad9c2fb0d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7587 5124 bytes
font_01_sfnt_off00008703.bin
f47af3659a070ecde19f5aaaa6d9b57b98739f73eef4557652e7738533d1d3b5
pdf-font-stream PDF embedded font (sfnt) at offset 0x8703 10128 bytes
font_02_sfnt_off0000a9c1.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0xA9C1 4324 bytes