Malicious PDF — malware analysis report

Static analysis result for SHA-256 abfe18a4030fa24e…

MALICIOUS

PDF

43.5 KB Created: 2020-09-18 05:38:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d147017adbc14dd3f230367cfedd833 SHA-1: 5db1372a5e2d041345b06676f36c86a1a0bd1514 SHA-256: abfe18a4030fa24efc9c696bc2e68e9d5b7a9f27d2c09fa525d1e9d2212aa170
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the URL https://ttraff.link/wix?keyword=living+environment+topic+6+ecology+answers, which is likely the initial lure. The presence of numerous other PDF links suggests a broader SEO poisoning or link farm strategy to distribute malicious content.

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.link/wix?keyword=living+environment+topic+6+ecology+answers
    • https://8425df41-b83b-40d6-916f-e9e840207fcd.filesusr.com/ugd/ce0e6d_1f3af31d41004d2ea87d78ebf8e434aa.pdf?index=true
    • https://e218af7d-9d7b-441f-958a-f43aa634fe59.filesusr.com/ugd/b13fd1_c93d1d8678554b8db2420cea86323a32.pdf?index=true
    • https://802c92e4-f324-4aba-a3fb-4edaae3edf74.filesusr.com/ugd/8ebb60_9001559759644ddca8b0af06ba7a9e9f.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0432/3776/9383/files/patogivogolepame.pdf
    • https://cdn.shopify.com/s/files/1/0476/8622/1990/files/gonasoposixoregedojib.pdf
    • https://cdn.shopify.com/s/files/1/0433/8168/6439/files/accounting_intern_interview_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/1715/0357/files/xiwaxogotutasegibajubup.pdf
    • https://5c9a5747-217c-480c-a799-f6414ee2d8f0.filesusr.com/ugd/aec2ea_9f6e8603613f49ca96027e72300db836.pdf?index=true
    • https://8484e483-3afc-45fd-b7ea-1e0291b22085.filesusr.com/ugd/04e6f9_af5f2017024341039ba3e5734fdb67fd.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0432/6011/7160/files/tixogobebujoxizuxukufefuj.pdf
    • https://cdn.shopify.com/s/files/1/0437/7611/4837/files/75949606867.pdf
    • https://cdn.shopify.com/s/files/1/0484/3359/4526/files/chapter_5_mid_chapter_quiz_answers_algebra_2.pdf
    • https://cdn.shopify.com/s/files/1/0427/6961/2966/files/stalingrad_by_antony_beevor.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_off000053e9.bin
a2d35a7166c87374c71810a4d0a9805b067c475917f3ad72fd67645ddd0237c7
pdf-font-stream PDF embedded font (sfnt) at offset 0x53E9 5392 bytes
font_01_sfnt_off00006638.bin
a1a6c8e764ab90d83c363678f0a100485ac6f75b8749e3380aee57d1f16dadcc
pdf-font-stream PDF embedded font (sfnt) at offset 0x6638 14392 bytes
font_02_sfnt_off00009319.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0x9319 4324 bytes