Malicious PDF — malware analysis report

Static analysis result for SHA-256 703ef877f9d2dd43…

MALICIOUS

PDF

61.2 KB Created: 2020-08-14 23:15:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9ed88daa937290f1f29c36af01c08b54 SHA-1: 2e7d867d5fb584e9c807c99a776fd66a8d7e0772 SHA-256: 703ef877f9d2dd43e618d1bc2d99eb8a332e0f1f276513ee60976e1e9ed5dcd9
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that redirect to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though partially corrupted, includes a URL that appears to be a lure related to popular media, suggesting a phishing or malware distribution attempt. The presence of numerous external PDF links also points to link farm activity, likely to obscure the ultimate malicious destination.

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=bts+love+yourself+%25E7%25BB%2593%25E2%2580%2598+answer+epiphany+lyric
    • http://files.roesselerrace.com/uploads/1/3/1/8/131856392/7287712.pdf
    • http://files.essentialmensclinic.com/uploads/1/3/0/7/130739778/3881631.pdf
    • http://files.upperskagitlibraryfoundation.org/uploads/1/3/0/7/130775998/fezinajelagevub.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0452/1653/0589/files/9704927133.pdf
    • https://cdn.shopify.com/s/files/1/0429/9191/1066/files/dodonojonedak.pdf
    • https://cdn.shopify.com/s/files/1/0432/5077/8269/files/musikawidiwotor.pdf
    • https://cdn.shopify.com/s/files/1/0430/9132/9173/files/gireniranes.pdf
    • https://cdn.shopify.com/s/files/1/0433/3436/9438/files/da_form_31_fillable.pdf
    • https://cdn.shopify.com/s/files/1/0432/7348/6496/files/witikimevi.pdf
    • https://cdn.shopify.com/s/files/1/0433/3273/1030/files/17504334575.pdf
    • https://cdn.shopify.com/s/files/1/0437/6618/6135/files/vepuvixupenetiw.pdf
    • https://cdn.shopify.com/s/files/1/0431/5057/3724/files/masterbuilt_sportsman_elite_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/cateterismo_vesical_en_nios.pdf
    • https://cdn.shopify.com/s/files/1/0434/6521/2066/files/market_analysis_template.pdf
    • https://cdn.shopify.com/s/files/1/0437/2509/5062/files/free_pbr_textures.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c73.bin
5c3f4fe568181770e5bfe133cf7e8e2216813d23c06d1c7a631166d360daf8c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C73 15264 bytes
font_01_sfnt_off00009ab5.bin
6007794a68dffb4e626f0b2ed814cdf97e9d9237345a0c7ed3f8d6b36e1c1f69		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9AB5 3176 bytes
font_02_sfnt_off0000a5dd.bin
2aa207fb1812897c2a2a78085bbebbd9276f07a621f8ed5954dce10c4fbfaf57		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA5DD 5464 bytes
font_03_sfnt_off0000b891.bin
83f928cfd690d37ec35f94fe1b03bba3948617bfab509f540f050161242dcd15		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB891 13460 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.