Malicious PDF — malware analysis report

Static analysis result for SHA-256 af5c10acbb31991e…

MALICIOUS

PDF

42.1 KB Created: 2020-08-06 15:29:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d538916bdac69e8b4a58583056ccf327 SHA-1: 746f2ec92ad490a4898cc0e80778afc57eea3f41 SHA-256: af5c10acbb31991e89d198f7d2dfc1358b49fa47d2648231585799255af56787
152 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, including one pointing to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains text suggesting a lure related to 'Saree blouse designs catalogue pdf'. The presence of a malicious redirector link indicates an attempt to lead the user to a harmful destination, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=saree+blouse+designs+catalogue+pdf
    • http://mamemaxeb.ametkorca.com/uploads/1/3/0/7/130775045/lifamoredev-saduwanes.pdf
    • http://files.nvgws.com/uploads/1/3/1/4/131407012/nujotodobejeg.pdf
    • http://files.emilyaustinphoto.com/uploads/1/3/0/9/130969306/famitutimine_rutadukawoguve_nikowepex_tidafitirik.pdf
    • http://mutid.thearttherapystudioithaca.com/uploads/1/3/1/3/131384635/0db453c2.pdf
    • http://files.wardmelvilleice.com/uploads/1/3/2/7/132740339/875412.pdf
    • https://cdn.shopify.com/s/files/1/0438/2402/1664/files/mapiwufox.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/zimiwedabo.pdf
    • https://cdn.shopify.com/s/files/1/0430/3699/9842/files/50343011456.pdf
    • https://cdn.shopify.com/s/files/1/0430/3477/1610/files/97783281692.pdf
    • https://cdn.shopify.com/s/files/1/0431/7016/8992/files/sample_probability_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0428/6955/5356/files/business_communication_process_and_product.pdf
    • https://cdn.shopify.com/s/files/1/0431/5322/7932/files/monitronics_alarm_system_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/8382/4294/files/fuvuwapove.pdf
    • https://cdn.shopify.com/s/files/1/0427/8062/3015/files/zekusepi.pdf
    • https://cdn.shopify.com/s/files/1/0430/8185/9225/files/lopufirupikukamomiragi.pdf
    • https://cdn.shopify.com/s/files/1/0440/6162/2437/files/export_icloud_keychain.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_off0000679b.bin
142e7b39e3f8066283b4ecff4a63fa13100448d48330a2ee31fb66980d7a5c2b
pdf-font-stream PDF embedded font (sfnt) at offset 0x679B 5568 bytes
font_01_sfnt_off00007a8e.bin
fcacec2465ba62b9cc6e12cdea2cf4c640ad9ab82ba5de1a20d68af0f8dec554
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A8E 9656 bytes