Malicious PDF — malware analysis report

Static analysis result for SHA-256 d00325900098442e…

MALICIOUS

PDF

45.4 KB Created: 2020-08-07 19:42:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e44bfbc58cee7a550dfcff7f41df3a71 SHA-1: e7ed17e0f01b3a94ca888b4d167e0d77bd032f8d SHA-256: d00325900098442e4b14a50158d198b38e8fdf8cd3c6d5eacaddeb09c5d5afb9
154 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=proses+metabolisme+lipid+pdf'. This URL is designed to lure users into downloading further malicious content. The document body, though heavily obfuscated, also contains this URL, reinforcing the malicious intent. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to increase visibility of the malicious redirector.

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=proses+metabolisme+lipid+pdf
    • http://files.coachdaisha.com/uploads/1/3/1/1/131163872/3604409.pdf
    • http://files.teamfitnessonline.com/uploads/1/3/0/8/130813357/7888941.pdf
    • http://sukulamu.kpugaming.com/uploads/1/3/0/8/130874304/wawamaser.pdf
    • https://cdn.shopify.com/s/files/1/0431/2442/4870/files/sebusifa.pdf
    • https://cdn.shopify.com/s/files/1/0432/0637/7633/files/ghatna_chakra_geography_2020_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0433/1595/3817/files/zuwugisarosawiji.pdf
    • https://cdn.shopify.com/s/files/1/0431/3153/5522/files/90388116419.pdf
    • https://cdn.shopify.com/s/files/1/0433/3774/4534/files/ruxigula.pdf
    • https://cdn.shopify.com/s/files/1/0435/6079/6318/files/53579886869.pdf
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/15517984077.pdf
    • https://cdn.shopify.com/s/files/1/0435/1868/9434/files/bilaspur_university_time_table_2020.pdf
    • https://cdn.shopify.com/s/files/1/0434/4021/0072/files/50961104022.pdf
    • https://cdn.shopify.com/s/files/1/0435/2140/9184/files/60238008793.pdf
    • https://cdn.shopify.com/s/files/1/0430/0288/8351/files/mulesejogoretekaf.pdf
    • https://cdn.shopify.com/s/files/1/0432/5657/8212/files/8529276382.pdf
    • https://cdn.shopify.com/s/files/1/0428/4570/0262/files/art_through_the_ages_14th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0428/8220/3801/files/20250443029.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006677.bin
a4b91b907e365d84727340f8a5cd9448861e9b9a07c75a54f5febedf3dce50a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6677 5012 bytes
font_01_sfnt_off00007771.bin
b685b7b48c35bf64429b4ba56a5351d24b3a708a3de6f489dae2b3f99f3bc74b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7771 10336 bytes
font_02_sfnt_off00009abc.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9ABC 4324 bytes

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