Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0b45d075b9b8193…

MALICIOUS

PDF

42.2 KB Created: 2020-09-03 20:46:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9f7e80d799fc49a8f8ee430f2ce0cb88 SHA-1: 6ac0a06539f90c7b16910fe20830dd8194ab51fc SHA-256: c0b45d075b9b81936bc277f8839ebf31492c271d69754ddc0048363be32ba997
148 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF file contains heuristics indicating it's a malicious redirector and part of a link farm, disguised as an invoice or payment lure. The document body, though heavily obfuscated, contains text related to "Texas child care licensing background check form" and a URL that appears to be a redirector. This suggests the primary goal is to trick the user into clicking the malicious link, likely for phishing or to download further malware.

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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.link/wix?keyword=texas+child+care+licensing+background+check+form
    • https://cdn.shopify.com/s/files/1/0433/9613/7111/files/texokesowasumutavudekakib.pdf
    • https://cdn.shopify.com/s/files/1/0437/9269/5458/files/4309456573.pdf
    • https://cdn.shopify.com/s/files/1/0430/8788/8535/files/black_desert_online_maehwa_awakening_quest_guide.pdf
    • https://cdn.shopify.com/s/files/1/0429/1638/0831/files/juroxuketikawo.pdf
    • https://cdn.shopify.com/s/files/1/0433/9502/3013/files/carpet_python_breeding_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/6524/4832/files/tiwizuxuwa.pdf
    • https://cdn.shopify.com/s/files/1/0433/9122/1923/files/97501768560.pdf
    • https://cdn.shopify.com/s/files/1/0435/1868/9434/files/narrative_report_for_ojt_sample.pdf
    • https://cdn.shopify.com/s/files/1/0429/6713/8470/files/pathfinder_roleplaying_game_bestiary.pdf
    • https://cdn.shopify.com/s/files/1/0437/4121/6929/files/zaxukajufamevomomuno.pdf
    • https://cdn.shopify.com/s/files/1/0437/8548/6485/files/35066956179.pdf
    • https://cdn.shopify.com/s/files/1/0428/5513/7447/files/xutowilefuvitum.pdf
    • https://cdn.shopify.com/s/files/1/0438/7844/9307/files/breadth_first_traversal.pdf
    • https://cdn.shopify.com/s/files/1/0435/7583/6840/files/conformations_of_cyclohexane_analysis.pdf
    • https://static.usrfiles.com/ugd/d017d5_cc1614ef4f894f36a7eae7ee33312265.pdf
    • https://static.usrfiles.com/ugd/c1de29_d369662dc26e42e8aa7e49a92225996d.pdf
    • https://static.usrfiles.com/ugd/9ec29b_35ac9d73a6a2480893eb8425d593a6a2.pdf
    • https://static.usrfiles.com/ugd/eda9ba_82b681adee114111aa5ef4fd2a711aaa.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_off00006474.bin
a97708d89e0625c1fe7449eea6fd1abf5eb3beb9955cfc04b07ddd5a36e676ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6474 5656 bytes
font_01_sfnt_off00007789.bin
1fcf2a31fcb0ebf231e530a66a625cd4c5b6050cf1e36dd49d90bb0b0851e264		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7789 10604 bytes

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