Malicious PDF — malware analysis report

Static analysis result for SHA-256 5690931c12e51175…

MALICIOUS

PDF

55.5 KB Created: 2020-08-17 11:36:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 41165cb0d724e38c571c62baa53bc677 SHA-1: 2dbc1076f6f2bf900f4aaa7d0a3ca08a7e9703e9 SHA-256: 5690931c12e51175310c3de35de03c1b62e9e67e3e92956952cb6545deee3699
128 Risk Score

Malware Insights

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

The PDF file contains a lure for a movie download, which upon clicking redirects to a malicious URL (ttraff.ru). This is further supported by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The PDF also contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO poisoning tactic to distribute the malicious content. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive link.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=saab+bahadar+full+movie+720p
    • http://jupobidol.donsellmaninvite.com/uploads/1/3/1/4/131438667/9056228.pdf
    • http://files.onlinehornlessons.com/uploads/1/3/0/7/130738993/e8f83ed97bd5.pdf
    • http://files.qaradaki.com/uploads/1/3/1/1/131164236/266f0a8.pdf
    • https://cdn.shopify.com/s/files/1/0431/6705/6028/files/2458086073.pdf
    • https://cdn.shopify.com/s/files/1/0429/0304/4263/files/60711158176.pdf
    • https://cdn.shopify.com/s/files/1/0430/7641/9744/files/penibanajasupufumod.pdf
    • https://cdn.shopify.com/s/files/1/0431/5004/9446/files/mosekomerenewo.pdf
    • https://cdn.shopify.com/s/files/1/0438/4060/2269/files/argumentative_essay_outline_graphic_organizer.pdf
    • https://cdn.shopify.com/s/files/1/0435/0646/6975/files/letter_tracing_worksheets_for_kindergarten.pdf
    • https://cdn.shopify.com/s/files/1/0433/0130/6526/files/aboriginal_food_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/7078/2624/files/bdo_gear_guide.pdf
    • https://cdn.shopify.com/s/files/1/0429/2270/5063/files/athens_city_guide.pdf
    • https://cdn.shopify.com/s/files/1/0428/4783/0183/files/bupaw.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 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004e26.bin
7092f4722dee57918958e9183dc44695a78dfd0a3c5261e5f80679854559e05b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E26 5760 bytes
font_01_sfnt_off000061a4.bin
aa890c11d31957efca0fd402aa72a454fd9b4193136962196ca6c8da92cd1596		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61A4 20968 bytes
font_02_sfnt_off000081d3.bin
04d00fe4d3d1cfb13f6c45ea00a1a16b92fe51d00c0709aca980b96f225372d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81D3 2276 bytes
font_03_sfnt_off00008b9f.bin
ac7cfba81456baea429a38780c3cfab4ea61847b0f546a97d17ef8246c249b58		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B9F 3512 bytes
font_04_sfnt_off000099d6.bin
6b544d54fc9dfd72ba7763efb877bca9058d756b1921e6a8926fc25f5890dfd2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x99D6 14620 bytes
font_05_sfnt_off0000c6f8.bin
2e46b36fed23876ebb6e11f7a152916482bd8967c060a582f04975efc8a71266		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC6F8 2056 bytes

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