Malicious PDF — malware analysis report

Static analysis result for SHA-256 221f5cb6dd7feb8f…

MALICIOUS

PDF

64.5 KB Created: 2020-08-30 22:32:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d64350b99589beadf2e6546c7b399b45 SHA-1: 6b777ed1929a4e3d09fb29364634b8e9ddf45f92 SHA-256: 221f5cb6dd7feb8f8c7603e68ea4f267f38c42f87d2db5e44041d204d4696825
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text related to 'Adobe acrobat xi pro serial number finder' and the malicious URL, suggesting a lure to trick users into clicking the link. The PDF also contains a large number of embedded links, many pointing to Shopify domains, which is flagged as a link farm.

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.com/wix?keyword=adobe+acrobat+xi+pro+serial+number+finder In PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0128/2711/files/bank_exams_today_banking_awareness.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6607/2994/files/free_english_tagalog_dictionary_for_laptop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7098/0247/files/35215884000.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_80c7413a27dc4850b3e9b38e144f2605.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/5de1df_91371358077c4d89996374818bd47557.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/2e4eb4_a2672cd26d9842d7bd4106b827b0e765.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/5af86b_40c73ded89404b038bd7fdbcca8a8db5.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/ee6770_881ff7619beb46febbc1307af46d9244.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1503/7343/files/carbon_cycle_diagram_and_explanation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4161/8082/files/braindumps_aws.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4958/1724/files/vegaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/68905528383.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0436/1884/files/79455124857.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_5a24bd9f1bc7496996d93b0c6e9612e2.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/d5cf39_48bb201fa425494595773ab0e990b3fc.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000091f7.bin
a17885b4fd577e0298a64705d5055d2ac7c2363fd7008e9cf236b3df412a17d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x91F7 2828 bytes
font_01_sfnt_off00009bf1.bin
078c3c5cd5a51b6342c6b0ad5bc4d45431eae026872f3060e35e24b8bb492ead		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BF1 5496 bytes
font_02_sfnt_off0000ae7d.bin
70302a845980550ac5f369f72364b67549f128b2e7a781a905ee98500d31a739		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAE7D 8652 bytes
font_03_sfnt_off0000c651.bin
b7d54050ee58622bc6f493010bec4971fe15c95deef86ed4b08ba7d7d6f944ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC651 15572 bytes

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