Malicious PDF — malware analysis report

Static analysis result for SHA-256 d14eb7ae78fc934d…

MALICIOUS

PDF

41.3 KB Created: 2020-09-07 03:01:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 97b943a44b098356a00e46175055b2cf SHA-1: d184fcbb56aa5165b161372aaa5c33181c601ec2 SHA-256: d14eb7ae78fc934d9ff369383baf5f16afac09ccc7efde3f15954862ad5a2f23
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link and a link farm, indicating a phishing or malicious content delivery attempt. The document body, though heavily obfuscated, contains text related to a 'fake outgoing caller id app android' and a URL that matches the redirector link. This suggests the PDF is designed to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.me/pify?keyword=fake+outgoing+caller+id+app+android
    • https://cdn.shopify.com/s/files/1/0429/8244/1113/files/9532956690.pdf
    • https://cdn.shopify.com/s/files/1/0431/5168/7848/files/joweruselezi.pdf
    • https://cdn.shopify.com/s/files/1/0429/5763/5735/files/67977815186.pdf
    • https://static.usrfiles.com/ugd/838e7e_b91adec01bc04c3586800384e88393fa.pdf
    • https://static.usrfiles.com/ugd/466fa0_5693ecbbf47346dc84b52bd58fed8c29.pdf
    • https://static.usrfiles.com/ugd/e02969_00e2432b4f1c480fb894f74b43bbe8d3.pdf
    • https://static.usrfiles.com/ugd/238140_d73859743c0242f6800ac691beb9b655.pdf
    • https://static.usrfiles.com/ugd/d2cc1f_0f546505430a4212a3f9491c22370593.pdf
    • https://static.usrfiles.com/ugd/64d889_3ecaca6122e04a168fad227891c37036.pdf
    • https://static.usrfiles.com/ugd/b8c837_6da2dc5df60c4aa28a00aed2239a116b.pdf
    • https://static.usrfiles.com/ugd/1ee69b_8d704aa94be54527993a2ea9e37a034d.pdf
    • https://static.usrfiles.com/ugd/3e5d97_98e811d141d24520a468befcb7aa7a79.pdf
    • https://cdn.shopify.com/s/files/1/0433/7693/5070/files/tipofusibadipikos.pdf
    • https://cdn.shopify.com/s/files/1/0438/9902/7611/files/xanajovabefaxotu.pdf
    • https://cdn.shopify.com/s/files/1/0437/7369/0017/files/saturn_ion_repair_manual.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_off00006266.bin
6ff697a15d061aa3a692fb53f720a05c140ed081850dfca1ddc593b2163e41b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6266 5084 bytes
font_01_sfnt_off000073ca.bin
bce20a56a9f71dd5f6d4d4cb3c8158053e1fed7f0b055ef5869bea058d9890ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73CA 10548 bytes

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