Malicious PDF — malware analysis report

Static analysis result for SHA-256 54e0dd8d5d3cad16…

MALICIOUS

PDF

36.9 KB Created: 2020-08-26 14:16:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7751579f62d1c255d2370c8efa23db88 SHA-1: 0bec871c6399f496c6da91d69f0deac5b1db289a SHA-256: 54e0dd8d5d3cad166172e4706c032f664f3a348b1b7040ca8c98a132bb239386
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, contains the target URL and references a 'solution manual', suggesting a lure. The primary intent appears to be redirecting the user to malicious infrastructure.

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.com/pify?keyword=andreu+mas-+colell+microeconomic+theory+solution+manual
    • http://files.sos-socialmedia.com/uploads/1/3/0/8/130814644/5074145.pdf
    • http://files.brianaprevost.com/uploads/1/3/0/9/130969116/balegafoviro-lovujaguzoxudo-subiv-fetubejijadi.pdf
    • http://motali.newnangymnastics.com/uploads/1/3/1/4/131437601/bagox_wegunuxeken.pdf
    • http://files.womansclubofpowhatan.org/uploads/1/3/1/8/131856146/3273816.pdf
    • http://bavuli.personalpilatesma.com/uploads/1/3/0/7/130739235/d91eb7bf6b.pdf
    • https://cdn.shopify.com/s/files/1/0428/6794/9724/files/pojis.pdf
    • https://cdn.shopify.com/s/files/1/0430/8077/7882/files/5th_grade_math_worksheets_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/3328/8091/files/51352762387.pdf
    • https://cdn.shopify.com/s/files/1/0433/0894/1467/files/additive_manufacturing_journal.pdf
    • https://cdn.shopify.com/s/files/1/0429/9204/2137/files/list_of_amendments_to_the_united_states_constitution.pdf
    • https://cdn.shopify.com/s/files/1/0431/5208/1053/files/98404675510.pdf
    • https://cdn.shopify.com/s/files/1/0434/8860/8418/files/voltage_divider_example_problems.pdf
    • https://cdn.shopify.com/s/files/1/0452/7711/8625/files/moluremoxowibotijo.pdf
    • https://cdn.shopify.com/s/files/1/0431/1125/2132/files/54932488359.pdf
    • https://cdn.shopify.com/s/files/1/0430/3663/9395/files/bible_study_guide_for_young_couples.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_off0000451a.bin
e60bbc5f4ddf58246f09211e71215c26cbc973b86a2f0130f5e629df76dc2df0
pdf-font-stream PDF embedded font (sfnt) at offset 0x451A 5184 bytes
font_01_sfnt_off00005688.bin
8ac1cffc728ae8ddbbf4d09ab522a2ae2d7430570bfe2b9233061ce8c0c3329a
pdf-font-stream PDF embedded font (sfnt) at offset 0x5688 9804 bytes
font_02_sfnt_off00007825.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0x7825 4324 bytes