Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c60935d72e841f5…

MALICIOUS

PDF

42.1 KB Created: 2020-08-02 09:02:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8daac281bf9729c872710e7bbb53a3f2 SHA-1: 2849fa108bf7fd208fdb85e465811189da591add SHA-256: 1c60935d72e841f5b77bd15ec85eee5ef1d4df555129464e4a0f8fef2fe5e9e8
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to a lure for 'Plague Inc. mod apk'. The document body also contains this URL, confirming the intent to redirect the user. The presence of a large number of external PDF links suggests a link farm used for SEO poisoning to increase visibility of the malicious download 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=plague+inc+mod+apk
    • http://files.shop-blace.com/uploads/1/3/0/7/130775116/kobezavikol.pdf
    • http://files.mrsstoddardsiewclasses.com/uploads/1/3/1/4/131437657/1677181.pdf
    • http://files.dotshallmark.com/uploads/1/3/1/0/131070792/dozalisipovabox_wugasami_valisemavej.pdf
    • http://files.thewildwaycoffee.com/uploads/1/3/1/8/131871622/f71f388376a.pdf
    • http://files.citizenphysicians.org/uploads/1/3/0/7/130739073/7743874.pdf
    • https://cdn.shopify.com/s/files/1/0434/0406/6983/files/xugaxakorazezewutam.pdf
    • https://cdn.shopify.com/s/files/1/0435/2563/6248/files/23186026526.pdf
    • https://cdn.shopify.com/s/files/1/0429/6946/4991/files/45030631346.pdf
    • https://cdn.shopify.com/s/files/1/0435/9634/9602/files/97709389246.pdf
    • https://cdn.shopify.com/s/files/1/0429/3555/0119/files/nys_doh_ems.pdf
    • https://cdn.shopify.com/s/files/1/0437/7939/1646/files/17895316483.pdf
    • https://cdn.shopify.com/s/files/1/0432/4678/0566/files/60668995158.pdf
    • https://cdn.shopify.com/s/files/1/0436/3993/1033/files/zolobitanejujijudope.pdf
    • https://cdn.shopify.com/s/files/1/0431/2370/3969/files/pividifuvasudasowu.pdf
    • https://cdn.shopify.com/s/files/1/0435/6869/3411/files/35999314027.pdf
    • https://cdn.shopify.com/s/files/1/0430/8333/3799/files/mimitoselujogitu.pdf
    • https://cdn.shopify.com/s/files/1/0432/2718/5311/files/54152227953.pdf
    • https://cdn.shopify.com/s/files/1/0433/5396/4712/files/sims_3_house_plans.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_off0000676f.bin
594b7ab99cbf4955631fd78052de87710c8024d834c3ea84be59817de560c3a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x676F 5184 bytes
font_01_sfnt_off00007909.bin
ad92fb7530c695fba499a039dd3dd836547e127cdc4a1305413acd0274c62f72		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7909 10060 bytes

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