Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae6c42febb523628…

MALICIOUS

PDF

39.6 KB Created: 2020-08-04 15:22:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7eac837c968a7c27eb05cc5934fada80 SHA-1: 2a6d10deb451fe143aab7e7ad0c3487a0c13c9f1 SHA-256: ae6c42febb52362837b11c92303fe80166381bbed30fd0f51817eb76db9a0d5b
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One of the primary links, https://ttraff.ru/pify?keyword=aviation+english+book+free+download+pdf, is identified as a malicious redirector. This suggests the document is designed to redirect users to malicious sites under the guise of providing a free PDF download. 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.ru/pify?keyword=aviation+english+book+free+download+pdf
    • http://files.thearconline.org/uploads/1/3/1/3/131380901/33eb553dd2d.pdf
    • http://files.dancingbeartech.com/uploads/1/3/0/8/130873932/pifodufi.pdf
    • http://files.francofestcalgary.com/uploads/1/3/1/3/131380343/jobotasivexa-sopubizoj-vuniba-xixedakupesuloz.pdf
    • http://files.caseyharvilla.com/uploads/1/3/2/7/132712214/vevuzupakaki.pdf
    • http://files.tobypenneyartist.com/uploads/1/3/1/8/131856743/kajadajevixasijebaxa.pdf
    • https://cdn.shopify.com/s/files/1/0431/2861/9168/files/rukigesewe.pdf
    • https://cdn.shopify.com/s/files/1/0431/2019/7789/files/70144429015.pdf
    • https://cdn.shopify.com/s/files/1/0434/2710/2887/files/60328984533.pdf
    • https://cdn.shopify.com/s/files/1/0430/0134/8255/files/59052314532.pdf
    • https://cdn.shopify.com/s/files/1/0437/6618/6135/files/misobaxilagugixikobusorus.pdf
    • https://cdn.shopify.com/s/files/1/0437/5350/4917/files/vufagipajuxasug.pdf
    • https://cdn.shopify.com/s/files/1/0431/8606/1463/files/pop_false_ceiling_design_catalogue.pdf
    • https://cdn.shopify.com/s/files/1/0427/5362/2182/files/9296110866.pdf
    • https://cdn.shopify.com/s/files/1/0434/1868/1496/files/78636048531.pdf
    • https://cdn.shopify.com/s/files/1/0432/5107/3174/files/85165148789.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rakapadanixip.pdf
    • https://cdn.shopify.com/s/files/1/0434/6124/7138/files/bapibakorarumuzajununa.pdf
    • https://cdn.shopify.com/s/files/1/0430/7707/5108/files/zufufavusoneligutoxu.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_off00004e91.bin
c92a8ef7a01926978b8a5b5b634022f3b597811084adb65887b2c6e2dec69b45
pdf-font-stream PDF embedded font (sfnt) at offset 0x4E91 5436 bytes
font_01_sfnt_off00006113.bin
5d78ba354529fd68a332526da978abf09e15bead26e5dd13846d7f66a658f29a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6113 9952 bytes
font_02_sfnt_off00008312.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x8312 4324 bytes