Malicious PDF — malware analysis report

Static analysis result for SHA-256 00699075509f7d20…

MALICIOUS

PDF

46.4 KB Created: 2020-08-31 14:08:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6be16908c765dab1bfb61a4c27890e45 SHA-1: 546841deba0cbdcf2a641fc85ea99dfaf8ff715a SHA-256: 00699075509f7d209e51ae734626ea1e2f3af1b00064f5ed4c56e0d9db86a9db
154 Risk Score

Malware Insights

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

The PDF document was flagged by multiple critical heuristics for containing malicious redirector links and a large link farm. The primary malicious URL identified is ttraff.com, which is used to redirect to other potentially malicious content. The document body contains garbled text but includes the malicious URL, suggesting an attempt to lure users to click on the links.

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/wix?keyword=ssf2+beta++mega
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0438/9853/6091/files/gugezomagagagujevuxajore.pdf
    • https://cdn.shopify.com/s/files/1/0461/6427/9448/files/56069678991.pdf
    • https://cdn.shopify.com/s/files/1/0435/4536/2591/files/alice_in_wonderland_play_script.pdf
    • https://cdn.shopify.com/s/files/1/0436/9596/4328/files/56793592992.pdf
    • https://cdn.shopify.com/s/files/1/0430/3136/3747/files/ibps_so_agriculture_officer_study_material.pdf
    • https://cdn.shopify.com/s/files/1/0434/5312/0664/files/air_force_manual_32-_1084_facility_requirements.pdf
    • https://cdn.shopify.com/s/files/1/0428/8253/1481/files/bharat_movie_video_songs_720p.pdf
    • https://static.usrfiles.com/ugd/ce77c6_b5436d50ac9247a883abea017d9a2873.pdf
    • https://static.usrfiles.com/ugd/21a131_2adf83c95c0049f8ad601b5b065ee8b7.pdf
    • https://static.usrfiles.com/ugd/b8c837_19bf628f17bd479e96ab3a433509fdc4.pdf
    • https://static.usrfiles.com/ugd/b8c837_809096bc45d647aabe6144a7a1001dca.pdf
    • https://static.usrfiles.com/ugd/edb4a7_7c2c3209943043728b2e270cd827d696.pdf
    • https://static.usrfiles.com/ugd/b8c837_c348125c14e743af95484c08f42a5667.pdf
    • https://static.usrfiles.com/ugd/70c1f8_aab6c5a4a6b143d484b15e5e8322e5fd.pdf
    • https://static.usrfiles.com/ugd/b8c837_8c0452be10fc494bbbe4d85771ffaf5d.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000074c8.bin
935f0b4f59f623e71566244a14bb95486481d1f28be3eb51a5b2de4d1a2b07a9
pdf-font-stream PDF embedded font (sfnt) at offset 0x74C8 5332 bytes
font_01_sfnt_off000086e3.bin
dcf09ba9c6e90865bb51b238c996b59b24e823bf5598d7fef758d455d8f7a414
pdf-font-stream PDF embedded font (sfnt) at offset 0x86E3 11636 bytes