Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8029fbc8ad90a99…

MALICIOUS

PDF

45.3 KB Created: 2020-08-21 21:28:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f20e5ed6d5d95fe84d54a45fc2a519d SHA-1: 6c96e3460d3112c85a6ea82c2010e560c0ab80d4 SHA-256: c8029fbc8ad90a9966b1f75c1341fcba445b46aa58d8f45b17633215d74317da
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to benign content on Shopify. However, one critical heuristic firing indicates a link to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains the same malicious URL, suggesting an attempt to lure users to a malicious site under the guise of providing flight information. No scripts were extracted, limiting the analysis of further malicious behavior.

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=berlin+sch%25C3%25B6nefeld+airport+flight+information
    • http://vopifenu.hpscotties.org/uploads/1/3/2/3/132303382/ab3995bce3a.pdf
    • http://files.allskillsenglish.com/uploads/1/3/2/7/132740637/vubogikop.pdf
    • http://files.yummyyouhealth.com/uploads/1/3/0/9/130969775/jeduwatinedafoguzako.pdf
    • http://files.stannartsandculturalcenter.org/uploads/1/3/1/8/131871970/5b77075e9d7ad.pdf
    • https://cdn.shopify.com/s/files/1/0435/9513/7181/files/calligraphy_exercises_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0437/6851/2669/files/renault_blaupunkt_radio_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/9261/5073/files/nuwesotedodepewusu.pdf
    • https://cdn.shopify.com/s/files/1/0438/3123/0624/files/creep_radiohead_piano_chords.pdf
    • https://cdn.shopify.com/s/files/1/0430/8844/5604/files/wow_vanilla_enhancement_shaman_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/0201/9487/files/murach_s_java_programming_5th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0437/1084/1000/files/fifty_shades_of_grey_christian.pdf
    • https://cdn.shopify.com/s/files/1/0428/2603/9463/files/veravosexofunilubuvexesoz.pdf
    • https://cdn.shopify.com/s/files/1/0434/4276/5991/files/bard_of_blood_book_free.pdf
    • https://cdn.shopify.com/s/files/1/0437/7473/8581/files/creative_cloud_cleaner_tool.pdf
    • https://cdn.shopify.com/s/files/1/0429/2821/0086/files/algebra_equations.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000049c2.bin
3d4760ca295192c89086870ebbac49c5a5945404ea6ab57fca452cf2db5f569a
pdf-font-stream PDF embedded font (sfnt) at offset 0x49C2 6440 bytes
font_01_sfnt_off000059b6.bin
6f5746775852606e361d52a1d4c0c29d947eae4303201cee5eaec0aa346a096d
pdf-font-stream PDF embedded font (sfnt) at offset 0x59B6 5756 bytes
font_02_sfnt_off00006cdb.bin
c6397f85f196d08786fa667ad466cf83085b8b5a3544560707fbc7f9d3021054
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CDB 10600 bytes
font_03_sfnt_off00008ff7.bin
dbe1f6873dfbc63a557840fa26764ed1e24daf10180a919a5f50e881975b6f06
pdf-font-stream PDF embedded font (sfnt) at offset 0x8FF7 16148 bytes