Malicious PDF — malware analysis report

Static analysis result for SHA-256 97193bd2828ac492…

MALICIOUS

PDF

36.1 KB Created: 2020-08-10 08:04:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6206a177c6cebf4f75ce5b735d45d1d6 SHA-1: 717b6761a8dc8c3320ea0ab3a213abd05f03e45c SHA-256: 97193bd2828ac4924b7c83080f1e096273e39fcebacd5a4ef9fcc5d9a35eaec6
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though partially corrupted, suggests a lure related to an 'air conditioner catalogue'. The primary malicious IOC is the redirector URL, which likely serves as a gateway to a phishing or malware distribution site. 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=carrier+window+type+air+conditioner+catalogue+pdf
    • http://lizepus.professionalpolishingtouch.com/uploads/1/3/0/7/130738870/3a377.pdf
    • http://files.dytrivia.com/uploads/1/3/0/7/130776167/fumudavi.pdf
    • http://files.faithfullyfitforlife.com/uploads/1/3/2/6/132683014/722111.pdf
    • https://cdn.shopify.com/s/files/1/0432/1633/9111/files/zenefizivajaxowi.pdf
    • https://cdn.shopify.com/s/files/1/0431/3687/6695/files/lized.pdf
    • https://cdn.shopify.com/s/files/1/0429/2732/5343/files/21371492241.pdf
    • https://cdn.shopify.com/s/files/1/0432/5743/0176/files/nitisepevafudami.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/medade.pdf
    • https://cdn.shopify.com/s/files/1/0435/4703/3752/files/78528562262.pdf
    • https://cdn.shopify.com/s/files/1/0430/4715/7911/files/66050584409.pdf
    • https://cdn.shopify.com/s/files/1/0433/9538/3446/files/mofos_free_login.pdf
    • https://cdn.shopify.com/s/files/1/0428/9029/7507/files/aerial_lift_annual_inspection_form.pdf
    • https://cdn.shopify.com/s/files/1/0429/0389/6217/files/mevik.pdf
    • https://cdn.shopify.com/s/files/1/0435/1187/3688/files/cpr_cardiopulmonary_resuscitation.pdf
    • https://cdn.shopify.com/s/files/1/0438/2598/7734/files/adobe_premiere_pro_trial.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_off00004872.bin
e4d8aa043043c5bb7e83080621d33eef146bd916f1228578f4c885c45a76eac7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4872 5244 bytes
font_01_sfnt_off00005a74.bin
a55ae7d0b2cac5a10b0855fca02b6eb5724537f740caec2fc8dea180e2f38035		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A74 12764 bytes

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