Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea70ca8232dc4165…

MALICIOUS

PDF

51.8 KB Created: 2020-08-03 11:32:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4555988d6599a71643e7c0fc3218785c SHA-1: d351715b7b76a44afce3933e2796eee276bb0982 SHA-256: ea70ca8232dc41659db162f2405d3631a8b8b75591df26d7a5930e272c854ad6
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, disguised as "Ssc stenographer question papers pdf". This heuristic, combined with the presence of numerous other external PDF links, indicates a likely attempt to drive traffic to malicious infrastructure. The document body itself is heavily obfuscated but contains the same lure text and URLs. 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=ssc+stenographer+question+papers+pdf
    • http://files.thelaurawilson.net/uploads/1/3/0/8/130873918/7419086.pdf
    • http://files.nunneryoandp.com/uploads/1/3/1/3/131380723/3217673.pdf
    • http://files.snowyriverfarms.com/uploads/1/3/1/4/131483108/nodipiseduk.pdf
    • http://files.nixonconstructionllc.com/uploads/1/3/1/4/131437655/857998.pdf
    • https://cdn.shopify.com/s/files/1/0429/2860/3295/files/79677137678.pdf
    • https://cdn.shopify.com/s/files/1/0429/9302/5183/files/mafikumivutozabotalowukot.pdf
    • https://cdn.shopify.com/s/files/1/0431/0469/8535/files/one_ring_rpg.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/49186839350.pdf
    • https://cdn.shopify.com/s/files/1/0434/8231/6957/files/powavol.pdf
    • https://cdn.shopify.com/s/files/1/0429/1228/4831/files/60968900327.pdf
    • https://cdn.shopify.com/s/files/1/0430/8323/5489/files/48606430901.pdf
    • https://cdn.shopify.com/s/files/1/0432/0614/8255/files/pasixokefetixut.pdf
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/aircraft_bill_of_sale.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/70998441087.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006847.bin
9b57b854eb972cdd3694080d8436eb7db049c769ab450290f0494cab95a89633		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6847 5496 bytes
font_01_sfnt_off00007ad2.bin
e778bceaecf7d39eb6df6d229c3bbe09e93189bfeb68d989b241b2fa33fc9c70		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AD2 14736 bytes
font_02_sfnt_off0000a82c.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA82C 4324 bytes
font_03_sfnt_off0000b62c.bin
ee8afa51e50492bdf4d25b6b01818d2021856a0eb5271b70f188e6d094f25891		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB62C 2832 bytes

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