Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d0b4d6ff9dd681c…

MALICIOUS

PDF

96.6 KB Created: 2020-08-07 05:42:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 29580b62de93c21e143098ee4ac89bb1 SHA-1: fccd319af24641c284205e5123d85cdbb23f872e SHA-256: 2d0b4d6ff9dd681cddc2e62a2e2a55f0e5353646c7e0de9350004c64b528d017
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at `ttraff.com`. The document body, though heavily obfuscated, contains the text "Latex symbol list pdf" and the malicious URL, suggesting a lure to trick users into clicking the link. The primary attack pattern involves redirecting users to malicious infrastructure via a link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.com/pify?keyword=latex+symbol+list+pdf
    • http://files.mypersonalleadershipjourney.com/uploads/1/3/1/4/131454523/zemud_lubebuv_mavefemexo_jabugov.pdf
    • http://files.4acoffee.com/uploads/1/3/1/1/131163976/dejutaketu_lexob.pdf
    • http://files.dawnentertainment.net/uploads/1/3/1/3/131380052/lamulotut_gibujupinixexar_jeposaxifafeg.pdf
    • http://files.ariellesterling.com/uploads/1/3/0/8/130873826/munez.pdf
    • http://files.yourvintageattic.com/uploads/1/3/1/8/131856039/cc1b33.pdf
    • https://cdn.shopify.com/s/files/1/0430/9676/8661/files/correction_officer_exam_ny.pdf
    • https://cdn.shopify.com/s/files/1/0439/6944/6046/files/nawojuzoro.pdf
    • https://cdn.shopify.com/s/files/1/0436/2626/6782/files/bible_archaeology.pdf
    • https://cdn.shopify.com/s/files/1/0434/0056/0803/files/madola.pdf
    • https://cdn.shopify.com/s/files/1/0437/5396/3678/files/cartoon_images_for_colouring.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/61927850068.pdf
    • https://cdn.shopify.com/s/files/1/0430/5967/5290/files/tolatenijisabewasaxatilun.pdf
    • https://cdn.shopify.com/s/files/1/0437/7713/0647/files/usf_health._docugateway_com.pdf
    • https://cdn.shopify.com/s/files/1/0433/3623/7206/files/jimikemuwexijafajedososak.pdf
    • https://cdn.shopify.com/s/files/1/0434/4718/9670/files/jiripage.pdf
    • https://cdn.shopify.com/s/files/1/0430/6183/7981/files/fofosupujovanafiwileniwud.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 7

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009bdc.bin
78c0bc40206bd8305e041a846d664bd23bba924c069bf161ae341942c7852470		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BDC 5344 bytes
font_01_sfnt_off0000adc5.bin
efc227c84b8f959e0f0cb1f80cc2faa62c2e1a8b2f78570f93d86bfa6947be20		 pdf-font-stream PDF embedded font (sfnt) at offset 0xADC5 6644 bytes
font_02_sfnt_off0000be01.bin
586e03d5bb0e3560cd0faad6ab2045e4c8ad4b41e33e673d6e0c243794a987ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBE01 2836 bytes
font_03_sfnt_off0000c893.bin
e0a39ac37c4417fd2eec204ea36d4bea2a6cc1a1038e2492a48cb472289499d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC893 1684 bytes
font_04_sfnt_off0000d0fb.bin
5c941dd01c2b16d479433b3b95da4f9d0ddc1f7ed2fe4f64348a537feb7d21af		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD0FB 19108 bytes
font_05_sfnt_off00010d0a.bin
151d834a5c2b851bef09be20370ccc2f3e0e35295637fb0bfe2c324ad3cfd857		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10D0A 42556 bytes
font_06_sfnt_off00016432.bin
c7307f7ca451ec53826b7f195fb161fc9807a2c5f9a5076851facb525d9f5491		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16432 6260 bytes

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