Malicious PDF — malware analysis report

Static analysis result for SHA-256 e18ee2a7c1996a97…

MALICIOUS

PDF

54.8 KB Created: 2020-08-11 19:34:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 608d4ced944014bf6d92faf494841c04 SHA-1: 3c729a5b32aebc6bf883987e3cd3ea3334af4732 SHA-256: e18ee2a7c1996a975e39e40a7159f5ee61490366ee1e0bdfbc3fbd329c01adb4
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting PDF files, suggesting an SEO link farm or content manipulation tactic. One critical heuristic identified a link to a known malicious redirector, `https://ttraff.cc/pify?keyword=asme+boiler+and+pressure+vessel+code+section+ix+pdf`, which is likely intended to lead the user to a malicious site. The document body itself is heavily obfuscated but contains the same suspicious URL, reinforcing the malicious intent.

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.cc/pify?keyword=asme+boiler+and+pressure+vessel+code+section+ix+pdf
    • http://files.oklahoma.afaparents.org/uploads/1/3/0/9/130969986/6584028.pdf
    • http://kaniju.crescentsigncraft.co.uk/uploads/1/3/0/8/130813747/3014408.pdf
    • http://files.nineravensstudio.com/uploads/1/3/0/8/130873781/5737509.pdf
    • http://files.buggybarnmuseum.com/uploads/1/3/1/0/131069887/7927040.pdf
    • http://files.cuckoonow.com/uploads/1/3/0/8/130874474/fekifo_japapifuvanawak_bezatim_neterukes.pdf
    • https://cdn.shopify.com/s/files/1/0429/0245/4428/files/advanced_mathematics_1_question_paper.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99913566500.pdf
    • https://cdn.shopify.com/s/files/1/0449/6785/4248/files/pdf_and_cdf_of_random_variable.pdf
    • https://cdn.shopify.com/s/files/1/0431/5178/6135/files/ragesodajilisel.pdf
    • https://cdn.shopify.com/s/files/1/0429/4171/0499/files/ballade_pour_adeline_easy_version.pdf
    • https://cdn.shopify.com/s/files/1/0428/5834/8703/files/rodukavanodowepazalome.pdf
    • https://cdn.shopify.com/s/files/1/0438/2146/5757/files/jekej.pdf
    • https://cdn.shopify.com/s/files/1/0432/5310/4790/files/94290013033.pdf
    • https://cdn.shopify.com/s/files/1/0429/8014/7359/files/rads_error_lol_windows_10.pdf
    • https://cdn.shopify.com/s/files/1/0430/4375/0039/files/adjectives_comparison_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0427/6341/9814/files/sasizo.pdf
    • https://cdn.shopify.com/s/files/1/0437/4354/3447/files/surface_area_and_volume_of_all_shapes.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009715.bin
e23daaa1827672eff08c317330431d6fb04ff7cd3036793f575ef0a0cdccee29
pdf-font-stream PDF embedded font (sfnt) at offset 0x9715 5560 bytes
font_01_sfnt_off0000a9d7.bin
2f1c8540e28b16b45b16e2d71636196bcefeb076219175e5e1dcd0f980379960
pdf-font-stream PDF embedded font (sfnt) at offset 0xA9D7 10380 bytes