Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f0e919c24fcaafa…

MALICIOUS

PDF

42.2 KB Created: 2020-08-14 16:39:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2eccedfe58ef1dab16fe42a1bcf09d7d SHA-1: 498804289ee2571e9d33833f460dbd89a54edede SHA-256: 4f0e919c24fcaafabdca4fc79a0342b6fe960eee02bc0c784e5111822cd18325
142 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which is further supported by the presence of numerous external PDF links, many hosted on Shopify. The document body, though obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=web+archive+file+converter+to+pdf', indicating a lure to disguise malicious activity. The heuristic 'SE_ENABLE_LURE' suggests the document likely instructs users to enable content, a common tactic for malware delivery.

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.
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
  • 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=web+archive+file+converter+to+pdf
    • http://tuxatate.tidewaterosa.com/uploads/1/3/1/4/131408899/b09f4250.pdf
    • http://votevi.moxyinithaca.com/uploads/1/3/0/8/130814575/8629626.pdf
    • http://files.vtxbts.com.au/uploads/1/3/0/8/130874284/numap-narenifegopir-guravofeja-gemukesotepazal.pdf
    • http://files.christianemillinery.com/uploads/1/3/1/3/131380440/a2b53be9.pdf
    • http://fomif.mapleridgechristmasfestival.com/uploads/1/3/1/4/131453284/4f00340a202.pdf
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/68818831135.pdf
    • https://cdn.shopify.com/s/files/1/0430/7845/1351/files/27173230453.pdf
    • https://cdn.shopify.com/s/files/1/0436/1627/2546/files/reliability_engineering_singiresu_s._rao.pdf
    • https://cdn.shopify.com/s/files/1/0437/7785/1553/files/ziruj.pdf
    • https://cdn.shopify.com/s/files/1/0435/7960/5147/files/ts_eamcet_bipc_allotment_order_2019.pdf
    • https://cdn.shopify.com/s/files/1/0428/9026/4742/files/pumped_up_kicks_chords.pdf
    • https://cdn.shopify.com/s/files/1/0437/1703/4134/files/18667578662.pdf
    • https://cdn.shopify.com/s/files/1/0431/5620/9819/files/93446308621.pdf
    • https://cdn.shopify.com/s/files/1/0430/3234/6773/files/jituvexiligatimadasexezu.pdf
    • https://cdn.shopify.com/s/files/1/0428/7266/8319/files/jiwumufiwedenud.pdf
    • https://cdn.shopify.com/s/files/1/0435/6400/7583/files/97857353415.pdf
    • https://cdn.shopify.com/s/files/1/0431/3455/0177/files/rivavago.pdf
    • https://cdn.shopify.com/s/files/1/0435/2878/1973/files/zuzoliwunebuboguzikefopem.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_off0000613b.bin
8e3b9f3d870cb058578057ae13945f1b74ff90f160e780169bf4d7169444d47f
pdf-font-stream PDF embedded font (sfnt) at offset 0x613B 5280 bytes
font_01_sfnt_off00007336.bin
36e2894307ec2cc2001eccbbc99089f341d0e6a825ce7381f36f3bc233b19746
pdf-font-stream PDF embedded font (sfnt) at offset 0x7336 12668 bytes